Document:

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                                                               EXECUTION VERSION

                          REGISTRATION RIGHTS AGREEMENT

     This REGISTRATION RIGHTS AGREEMENT, dated June 6, 2002 (the "Agreement"),
is entered into by and among TriMas Corporation, a Delaware corporation (the
"Company"), each of the Company's subsidiaries listed on the signature pages
hereof (such subsidiaries, the "Guarantors"), Credit Suisse First Boston
Corporation, J.P. Morgan Securities Inc., First Union Securities, Inc., Deutsche
Bank Securities Inc., Comerica Securities, Inc. and NatCity Investments, Inc.,
as representatives of the several initial purchasers (collectively, the "Initial
Purchasers").

     The Company, the Guarantors and the Initial Purchasers are parties to the
Purchase Agreement, dated May 23, 2002 (the "Purchase Agreement"), which
provides for the sale by the Company to the Initial Purchasers of $352,773,000
aggregate principal amount of the Company's 9-7/8% Senior Subordinated Notes due
2012 (the "Securities"), which will be fully and unconditionally guaranteed on
an unsecured senior subordinated basis by each of the Guarantors (the
"Guarantees"). As an inducement to the Initial Purchasers to enter into the
Purchase Agreement, the Company and the Guarantors have agreed to provide to the
Initial Purchasers and their direct and indirect transferees the registration
rights set forth in this Agreement. The execution and delivery of this Agreement
is a condition to the closing under the Purchase Agreement.

     In consideration of the foregoing, the parties hereto agree as follows:

Section 1. Definitions.

     As used in this Agreement, the following terms shall have the following
meanings:

     "Business Day" shall mean any day that is not a Saturday, Sunday or other
day on which commercial banks in New York City are authorized or required by law
to remain closed.

     "Closing Date" shall mean the Closing Date as defined in the Purchase
Agreement.

     "Company" shall have the meaning set forth in the preamble and shall also
include the Company's successors.

     "Exchange Act" shall mean the Securities Exchange Act of 1934, as amended
from time to time.

     "Exchange Date" shall have the meaning set forth in Section 2(a)(ii)
hereof.

     "Exchange Offer" shall mean the exchange offer by the Company and the
Guarantors of Exchange Securities for Registrable Securities pursuant to Section
2(a) hereof.

     "Exchange Offer Registration" shall mean a registration under the
Securities Act effected pursuant to Section 2(a) hereof.

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     "Exchange Offer Registration Statement" shall mean an exchange offer
registration statement on Form S-4 (or, if applicable, on another appropriate
form) and all amendments and supplements to such registration statement, in each
case including the Prospectus contained therein, all exhibits thereto and any
document incorporated by reference therein.

     "Exchange Securities" shall mean the 9-7/8% Senior Subordinated Notes due
2012 issued by the Company and guaranteed by the Guarantors under the Indenture
containing terms identical to the Securities and the Guarantees (except that the
Exchange Securities will not be subject to restrictions on transfer or to any
increase in annual interest rate for failure to comply with this Agreement) and
to be offered to Holders of Securities in exchange for Securities pursuant to
the Exchange Offer.

     "Guarantors" shall have the meaning set forth in the preamble and shall
also include any successors to the Guarantors.

     "Holders" shall mean the Initial Purchasers, for so long as they own any
Registrable Securities, and each of their successors, assigns and direct and
indirect transferees who become owners of Registrable Securities under the
Indenture; provided that for purposes of Sections 4 and 5 of this Agreement, the
term "Holders" shall include Participating Broker-Dealers.

     "Indemnified Person" shall have the meaning set forth in Section 5(c)
hereof.

     "Indemnifying Person" shall have the meaning set forth in Section 5(c)
hereof.

     "Indenture" shall mean the Indenture relating to the Securities, dated as
of June 6, 2002, among the Company, the Guarantors and The Bank of New York, as
trustee, as the same may be amended from time to time in accordance with the
terms thereof.

     "Initial Purchasers" shall have the meaning set forth in the preamble.

     "Inspector" shall have the meaning set forth in Section 3(m) hereof.

     "Majority Holders" shall mean the Holders of a majority of the aggregate
principal amount of outstanding Registrable Securities; provided that whenever
the consent or approval of Holders of a specified percentage of Registrable
Securities is required hereunder, Registrable Securities owned directly or
indirectly by the Company or any of its affiliates shall not be counted in
determining whether such consent or approval was given by the Holders of such
required percentage or amount.

     "Participating Broker-Dealers" shall have the meaning set forth in Section
4(a) hereof.

     "Person" shall mean an individual, partnership, limited liability company,
corporation, trust or unincorporated organization, or a government or agency or
political subdivision thereof.

     "Purchase Agreement" shall have the meaning set forth in the preamble.

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     "Prospectus" shall mean the prospectus included in a Registration
Statement, including any preliminary prospectus, and any such prospectus as
amended or supplemented by any prospectus supplement, including a prospectus
supplement with respect to the terms of the offering of any portion of the
Registrable Securities covered by a Shelf Registration Statement, and by all
other amendments and supplements to such prospectus, and in each case including
any document incorporated by reference therein.

     "Registrable Securities" shall mean the Securities; provided that the
Securities shall cease to be Registrable Securities (i) when a Registration
Statement with respect to such Securities has been declared effective under the
Securities Act and such Securities have been exchanged or disposed of pursuant
to such Registration Statement, (ii) when such Securities have been sold
pursuant to Rule 144 or are eligible for resale pursuant to Rule 144(k) (or any
similar provision then in force, but not Rule 144A) under the Securities Act or
(iii) when such Securities cease to be outstanding.

     "Registration Expenses" shall mean any and all expenses incident to
performance of or compliance by the Company and the Guarantors with this
Agreement, including without limitation: (i) all SEC, stock exchange or National
Association of Securities Dealers, Inc. registration and filing fees, (ii) all
fees and expenses incurred in connection with compliance with state securities
or blue sky laws (including reasonable fees and disbursements of counsel for any
Underwriters or Holders in connection with blue sky qualification of any
Exchange Securities or Registrable Securities), (iii) all expenses of any
Persons in preparing or assisting in preparing, word processing, printing and
distributing any Registration Statement, any Prospectus and any amendments or
supplements thereto, any underwriting agreements, securities sales agreements or
other similar agreements and any other documents relating to the performance of
and compliance with this Agreement, (iv) all rating agency fees, (v) all fees
and disbursements relating to the qualification of the Indenture under
applicable securities laws, (vi) the fees and disbursements of the Trustee and
its counsel, (vii) the fees and disbursements of counsel for the Company and the
Guarantors and, in the case of a Shelf Registration Statement, the fees and
disbursements of one counsel for the Holders (which counsel shall be selected by
the Majority Holders and which counsel may also be counsel for the Initial
Purchasers) and (viii) the fees and disbursements of the independent public
accountants of the Company and the Guarantors, including the expenses of any
special audits or "comfort" letters required by or incident to the performance
of and compliance with this Agreement, but excluding fees and expenses of
counsel to the Underwriters (other than fees and expenses set forth in clause
(ii) above) or the Holders and underwriting discounts and commissions and
transfer taxes, if any, relating to the sale or disposition of Registrable
Securities by a Holder.

     "Registration Statement" shall mean any registration statement of the
Company and the Guarantors that covers any of the Exchange Securities or
Registrable Securities pursuant to the provisions of this Agreement and all
amendments and supplements to any such registration statement, including
post-effective amendments, in each case including the Prospectus contained
therein, all exhibits thereto and any document incorporated by reference
therein.

     "SEC" shall mean the Securities and Exchange Commission.

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     "Securities Act" shall mean the Securities Act of 1933, as amended from
time to time.

     "Shelf Registration" shall mean a registration effected pursuant to Section
2(b) hereof.

     "Shelf Registration Statement" shall mean a "shelf" registration statement
of the Company and the Guarantors that covers all the Registrable Securities
(but no other securities unless approved by the Holders whose Registrable
Securities to be covered by such Shelf Registration Statement) on an appropriate
form under Rule 415 under the Securities Act, or any similar rule that may be
adopted by the SEC, and all amendments and supplements to such registration
statement, including post-effective amendments, in each case including the
Prospectus contained therein, all exhibits thereto and any document incorporated
by reference therein.

     "Staff" shall mean the staff of the SEC.

     "Trust Indenture Act" shall mean the Trust Indenture Act of 1939, as
amended from time to time.

     "Trustee" shall mean the trustee with respect to the Securities under the
Indenture.

     "Underwriter" shall have the meaning set forth in Section 3 hereof.

     "Underwritten Offering" shall mean an offering in which Registrable
Securities are sold to an Underwriter for reoffering to the public.

Section 2. Registration Under the Securities Act.

     (a) To the extent not prohibited by any applicable law or applicable
interpretations of the Staff, the Company and the Guarantors shall use their
reasonable best efforts to (i) cause to be filed an Exchange Offer Registration
Statement covering an offer to the Holders to exchange all the Registrable
Securities for Exchange Securities and (ii) have such Registration Statement
remain effective until the closing of the Exchange Offer. The Company and the
Guarantors shall commence the Exchange Offer promptly after the Exchange Offer
Registration Statement is declared effective by the SEC and use their reasonable
best efforts to complete the Exchange Offer not later than 60 days after such
effective date.

     The Company and the Guarantors shall commence the Exchange Offer by mailing
the related Prospectus, appropriate letters of transmittal and other
accompanying documents to each Holder stating, in addition to such other
disclosures as are required by applicable law:

         (i)   that the Exchange Offer is being made pursuant to this Agreement
               and that all Registrable Securities validly tendered and not
               properly withdrawn will be accepted for exchange;

         (ii)  the dates of acceptance for exchange (which shall be a period of
               at least 20 Business Days from the date such notice is mailed)
               (each, an "Exchange Date");

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         (iii) that any Registrable Security not tendered will remain
               outstanding and continue to accrue interest but will not retain
               any rights under this Agreement;

         (iv)  that any Holder electing to have a Registrable Security exchanged
               pursuant to the Exchange Offer will be required to surrender such
               Registrable Security, together with the appropriate letters of
               transmittal, to the institution and at the address (located in
               the Borough of Manhattan, The City of New York) and in the manner
               specified in the notice, prior to the close of business on the
               last Exchange Date; and

         (v)   that any Holder will be entitled to withdraw its election, not
               later than the close of business on the last Exchange Date, by
               sending to the institution and at the address (located in the
               Borough of Manhattan, The City of New York) specified in the
               notice, a telegram, telex, facsimile transmission or letter
               setting forth the name of such Holder, the principal amount of
               Registrable Securities delivered for exchange and a statement
               that such Holder is withdrawing its election to have such
               Securities exchanged.

     As a condition to participating in the Exchange Offer, a Holder will be
required to represent to the Company and the Guarantors that (i) any Exchange
Securities to be received by it will be acquired in the ordinary course of its
business, (ii) at the time of the commencement of the Exchange Offer it has no
arrangement or understanding with any Person to participate in the distribution
(within the meaning of the Securities Act) of the Exchange Securities in
violation of the provisions of the Securities Act, (iii) it is not an
"affiliate" (within the meaning of Rule 405 under Securities Act) of the Company
or any Guarantor and (iv) if such Holder is a broker-dealer that will receive
Exchange Securities for its own account in exchange for Registrable Securities
that were acquired as a result of market-making or other trading activities,
then such Holder will deliver a Prospectus in connection with any resale of such
Exchange Securities.

     As soon as practicable after the last Exchange Date, the Company and the
Guarantors shall:

         (i)   accept for exchange Registrable Securities or portions thereof
               validly tendered and not properly withdrawn pursuant to the
               Exchange Offer; and

         (ii)  deliver, or cause to be delivered, to the Trustee for
               cancellation all Registrable Securities or portions thereof so
               accepted for exchange by the Company and issue, and cause the
               Trustee to promptly authenticate and deliver to each Holder,
               Exchange Securities equal in principal amount to the principal
               amount of the Registrable Securities surrendered by such Holder.

     The Company and the Guarantors shall use their reasonable best efforts to
complete the Exchange Offer as provided above and shall comply with the
applicable requirements of the Securities Act, the Exchange Act and other
applicable laws and regulations in connection with

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the Exchange Offer. The Exchange Offer shall not be subject to any conditions,
other than that the Exchange Offer does not violate any applicable law or
applicable interpretations of the Staff.

     (b) In the event that (i) the Company and the Guarantors determine that the
Exchange Offer Registration provided for in Section 2(a) above is not available
or may not be completed as soon as practicable after the last Exchange Date
because it would violate any applicable law or applicable interpretations of the
Staff, (ii) the Exchange Offer is not for any other reason completed by 210 days
after the Closing Date or (iii) the Exchange Offer has been completed and in the
opinion of counsel for the Initial Purchasers a Registration Statement must be
filed and a Prospectus must be delivered by the Initial Purchasers in connection
with any offering or sale of Registrable Securities held by the Initial
Purchasers, the Company and the Guarantors shall use their reasonable best
efforts to cause to be filed as soon as practicable after such determination,
date or notice of such opinion of counsel is given to the Company, as the case
may be, a Shelf Registration Statement providing for the sale of all the
Registrable Securities by the Holders thereof (or Initial Purchasers that are
holders thereof in the case of a Shelf Registration Statement filed pursuant to
clause (iii) of this sentence) and to have such Shelf Registration Statement
declared effective by the SEC.

     In the event that the Company and the Guarantors are required to file a
Shelf Registration Statement solely as a result of the matters referred to in
clause (iii) of the preceding sentence, the Company and the Guarantors shall use
their reasonable best efforts to file and have declared effective by the SEC
both an Exchange Offer Registration Statement pursuant to Section 2(a) with
respect to all Registrable Securities and a Shelf Registration Statement (which
may be a combined Registration Statement with the Exchange Offer Registration
Statement) with respect to offers and sales of Registrable Securities held by
the Initial Purchasers after completion of the Exchange Offer. The Company and
the Guarantors agree to use their reasonable best efforts to keep the Shelf
Registration Statement continuously effective until the expiration of the period
referred to in Rule 144(k) under the Securities Act with respect to the
Registrable Securities or such shorter period that will terminate when all the
Registrable Securities covered by the Shelf Registration Statement have been
sold pursuant to the Shelf Registration Statement. The Company and the
Guarantors further agree to supplement or amend the Shelf Registration Statement
and the related Prospectus if required by the rules, regulations or instructions
applicable to the registration form used by the Company for such Shelf
Registration Statement or by the Securities Act or by any other rules and
regulations thereunder for shelf registration or if reasonably requested by a
Holder of Registrable Securities with respect to information relating to such
Holder, and to use their reasonable best efforts to cause any such amendment to
become effective and such Shelf Registration Statement and Prospectus to become
usable as soon as thereafter practicable. The Company and the Guarantors agree
to furnish to the Holders of Registrable Securities copies of any such
supplement or amendment promptly after its being used or filed with the SEC.

     (c) The Company and the Guarantors shall pay all Registration Expenses in
connection with the registration pursuant to Section 2(a) and Section 2(b)
hereof. Each Holder shall pay all underwriting discounts and commissions and
transfer taxes, if any, relating to the sale or disposition of such Holder's
Registrable Securities pursuant to the Shelf Registration Statement.

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     (d) An Exchange Offer Registration Statement pursuant to Section 2(a)
hereof or a Shelf Registration Statement pursuant to Section 2(b) hereof will
not be deemed to have become effective unless it has been declared effective by
the SEC; provided that if, after it has been declared effective, the offering of
Registrable Securities pursuant to a Shelf Registration Statement is interfered
with by any stop order, injunction or other order or requirement of the SEC or
any court or other governmental or regulatory agency or body, such Registration
Statement will be deemed not to have become effective during the period of such
interference until the offering of Registrable Securities pursuant to such
Registration Statement may legally resume.

     In the event that either the Exchange Offer is not completed or a Shelf
Registration Statement, if required hereby, is not declared effective within 210
days of the Closing Date, the interest rate on the Registrable Securities will
be increased by 1.00% per annum until the Exchange Offer is completed or the
Shelf Registration Statement, if required hereby, is declared effective by the
SEC or the Securities become freely tradable under the Securities Act.

     (e) Without limiting the remedies available to the Initial Purchasers and
the Holders, the Company and the Guarantors acknowledge that any failure by the
Company or the Guarantors to comply with their obligations under Section 2(a)
and Section 2(b) hereof may result in material irreparable injury to the Initial
Purchasers or the Holders for which there is no adequate remedy at law, that it
will not be possible to measure damages for such injuries precisely and that, in
the event of any such failure, the Initial Purchasers or any Holder may obtain
such relief as may be required to specifically enforce the Company's and the
Guarantors' obligations under Section 2(a) and Section 2(b) hereof.

Section 3. Registration Procedures.

     In connection with their obligations pursuant to Section 2(a) and Section
2(b) hereof, the Company and the Guarantors shall as expeditiously as possible:

     (a) prepare and file with the SEC a Registration Statement on the
appropriate form under the Securities Act, which form (x) shall be selected by
the Company and the Guarantors, (y) shall, in the case of a Shelf Registration,
be available for the sale of the Registrable Securities by the selling Holders
thereof and (z) shall comply as to form in all material respects with the
requirements of the applicable form and include all financial statements
required by the SEC to be filed therewith; and use their reasonable best efforts
to cause such Registration Statement to become effective and remain effective
for the applicable period in accordance with Section 2 hereof;

     (b) prepare and file with the SEC such amendments and post-effective
amendments to each Registration Statement as may be necessary to keep such
Registration Statement effective for the applicable period in accordance with
Section 2 hereof and cause each Prospectus to be supplemented by any required
prospectus supplement and, as so supplemented, to be filed pursuant to Rule 424
under the Securities Act; and keep each Prospectus current during the period
described in Section 4(3) of and Rule 174 under the Securities Act that is
applicable to

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transactions by brokers or dealers with respect to the Registrable Securities or
Exchange Securities;

     (c) in the case of a Shelf Registration, furnish to each Holder of
Registrable Securities, to counsel for the Initial Purchasers, to counsel for
such Holders and to each Underwriter of an Underwritten Offering of Registrable
Securities, if any, without charge, as many copies of each Prospectus, including
each preliminary Prospectus, and any amendment or supplement thereto in order to
facilitate the sale or other disposition of the Registrable Securities
thereunder; and the Company and the Guarantors consent to the use of such
Prospectus and any amendment or supplement thereto in accordance with applicable
law by each of the selling Holders of Registrable Securities and any such
Underwriters in connection with the offering and sale of the Registrable
Securities covered by and in the manner described in such Prospectus or any
amendment or supplement thereto in accordance with applicable law;

     (d) use their reasonable best efforts to register or qualify the
Registrable Securities under all applicable state securities or blue sky laws of
such jurisdictions as any Holder of Registrable Securities covered by a
Registration Statement shall reasonably request in writing by the time the
applicable Registration Statement is declared effective by the SEC; cooperate
with the Holders in connection with any filings required to be made with the
National Association of Securities Dealers, Inc.; and do any and all other acts
and things that may be reasonably necessary or advisable to enable each Holder
to complete the disposition in each such jurisdiction of the Registrable
Securities owned by such Holder; provided that neither the Company nor any
Guarantor shall be required to (i) qualify as a foreign corporation or other
entity or as a dealer in securities in any jurisdiction where it would not
otherwise be required to so qualify, (ii) file any general consent to service of
process in any such jurisdiction or (iii) subject itself to taxation in any such
jurisdiction if it is not so subject;

     (e) in the case of a Shelf Registration, notify each Holder of Registrable
Securities, counsel for such Holders and counsel for the Initial Purchasers
promptly and, if requested by any such Holder or counsel, confirm such advice in
writing (i) when a Registration Statement has become effective and when any
post-effective amendment thereto has been filed and becomes effective, (ii) of
any request by the SEC or any state securities authority for amendments and
supplements to a Registration Statement and Prospectus or for additional
information after the Registration Statement has become effective, (iii) of the
issuance by the SEC or any state securities authority of any stop order
suspending the effectiveness of a Registration Statement or the initiation of
any proceedings for that purpose, (iv) if, between the effective date of a
Registration Statement and the closing of any sale of Registrable Securities
covered thereby, the representations and warranties of the Company or any
Guarantor contained in any underwriting agreement, securities sales agreement or
other similar agreement, if any, relating to an offering of such Registrable
Securities cease to be true and correct in all material respects or if the
Company or any Guarantor receives any notification with respect to the
suspension of the qualification of the Registrable Securities for sale in any
jurisdiction or the initiation of any proceeding for such purpose, (v) of the
happening of any event during the period a Shelf Registration Statement is
effective that makes any statement made in such Registration Statement or the
related Prospectus untrue in any material respect or that requires the making of
any changes in such Registration Statement or Prospectus in order to make the
statements therein not misleading and (vi) of any

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determination by the Company or any Guarantor that a post-effective amendment to
a Registration Statement would be appropriate;

     (f) use their reasonable best efforts to obtain the withdrawal of any order
suspending the effectiveness of a Registration Statement at the earliest
possible moment and provide immediate notice to each Holder of the withdrawal of
any such order;

     (g) in the case of a Shelf Registration, furnish to each Holder of
Registrable Securities, without charge, at least one conformed copy of each
Registration Statement and any post-effective amendment thereto (without any
documents incorporated therein by reference or exhibits thereto, unless
requested);

     (h) in the case of a Shelf Registration, cooperate with the selling Holders
of Registrable Securities to facilitate the timely preparation and delivery of
certificates representing Registrable Securities to be sold and not bearing any
restrictive legends and enable such Registrable Securities to be issued in such
denominations and registered in such names (consistent with the provisions of
the Indenture) as the selling Holders may reasonably request at least one
Business Day prior to the closing of any sale of Registrable Securities;

     (i) in the case of a Shelf Registration, upon the occurrence of any event
contemplated by Section 3(e)(iii) or 3(e)(v) hereof, use their reasonable best
efforts to prepare and file with the SEC a supplement or post-effective
amendment to a Registration Statement or the related Prospectus or any document
incorporated therein by reference or file any other required document so that,
as thereafter delivered to purchasers of the Registrable Securities, such
Prospectus will not contain any untrue statement of a material fact or omit to
state a material fact necessary to make the statements therein, in the light of
the circumstances under which they were made, not misleading; and the Company
and the Guarantors shall notify the Holders of Registrable Securities to suspend
use of the Prospectus as promptly as practicable after the occurrence of such an
event, and such Holders hereby agree to suspend use of the Prospectus until the
Company and the Guarantors have amended or supplemented the Prospectus to
correct such misstatement or omission;

     (j) a reasonable time prior to the filing of any Shelf Registration
Statement, any related Prospectus, any amendment to a Shelf Registration
Statement or amendment or supplement to a related Prospectus or of any document
that is to be incorporated by reference into a Shelf Registration Statement or a
related Prospectus after initial filing of a Shelf Registration Statement,
provide copies of such document to the Initial Purchasers and their counsel and
to the Holders of Registrable Securities and their counsel and make such of the
representatives of the Company and the Guarantors as shall be reasonably
requested by the Initial Purchasers or their counsel or the Holders of
Registrable Securities or their counsel available for discussion of such
document; and the Company and the Guarantors shall not at any time after initial
filing of a Shelf Registration Statement file any amendment to the Shelf
Registration Statement, any related Prospectus or any amendment of or supplement
to a Shelf Registration Statement or a related Prospectus or any document that
is to be incorporated by reference into a Shelf Registration Statement or a
related Prospectus, of which the Initial Purchasers and their counsel and the
Holders of Registrable Securities and their counsel shall not have previously

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been advised and furnished a copy or to which the Initial Purchasers or their
counsel or the Holders or their counsel shall reasonably object;

     (k) obtain a CUSIP number for all Exchange Securities or Registrable
Securities, as the case may be, not later than the effective date of a
Registration Statement;

     (l) cause the Indenture to be qualified under the Trust Indenture Act in
connection with the registration of the Exchange Securities or Registrable
Securities, as the case may be; cooperate with the Trustee and the Holders to
effect such changes to the Indenture as may be required for the Indenture to be
so qualified in accordance with the terms of the Trust Indenture Act; and
execute, and use their reasonable best efforts to cause the Trustee to execute,
all documents as may be required to effect such changes and all other forms and
documents required to be filed with the SEC to enable the Indenture to be so
qualified in a timely manner;

     (m) in the case of a Shelf Registration, make available for inspection by a
representative of the Holders of the Registrable Securities (an "Inspector"),
any Underwriter participating in any disposition pursuant to such Shelf
Registration Statement, and attorneys and accountants designated by the Holders,
at reasonable times and in a reasonable manner, all pertinent financial and
other records, pertinent documents and properties of the Company and the
Guarantors, and cause the respective officers, directors and employees of the
Company and the Guarantors to supply all information reasonably requested by any
such Inspector, Underwriter, attorney or accountant in connection with a Shelf
Registration Statement; provided that if any such information is identified by
the Company or any Guarantor as being confidential or proprietary, each Person
receiving such information shall take such actions as are reasonably necessary
to protect the confidentiality of such information to the extent such action is
otherwise not inconsistent with, an impairment of or in derogation of the rights
and interests of any Inspector, Holder or Underwriter;

     (n) in the case of a Shelf Registration, use their reasonable best efforts
to cause all Registrable Securities to be listed on any securities exchange or
any automated quotation system on which similar securities issued or guaranteed
by the Company or any Guarantor are then listed if requested by the Majority
Holders, to the extent such Registrable Securities satisfy applicable listing
requirements;

     (o) if reasonably requested by any Holder of Registrable Securities covered
by a Registration Statement, promptly incorporate in a Prospectus supplement or
post-effective amendment such information with respect to such Holder as such
Holder reasonably requests to be included therein and make all required filings
of such Prospectus supplement or such post-effective amendment as soon as the
Company has received notification of the matters to be incorporated in such
filing; and

     (p) in the case of a Shelf Registration, enter into such customary
agreements and take all such other actions in connection therewith (including
those requested by the Holders of a majority in principal amount of the
Registrable Securities being sold) in order to expedite or facilitate the
disposition of such Registrable Securities including, but not limited to, an
Underwritten Offering and in such connection, (i) to the extent possible, make
such

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representations and warranties to the Holders and any Underwriters of such
Registrable Securities with respect to the business of the Company and its
subsidiaries, the Registration Statement, Prospectus and documents incorporated
by reference or deemed incorporated by reference, if any, in each case, in form,
substance and scope as are customarily made by issuers to underwriters in
underwritten offerings and confirm the same if and when requested, (ii) obtain
opinions of counsel to the Company and the Guarantors (which counsel and
opinions, in form, scope and substance, shall be reasonably satisfactory to the
Holders and such Underwriters and their respective counsel) addressed to each
selling Holder and Underwriter of Registrable Securities, covering the matters
customarily covered in opinions requested in underwritten offerings, (iii)
obtain "comfort" letters from the independent certified public accountants of
the Company and the Guarantors (and, if necessary, any other certified public
accountant of any subsidiary of the Company or any Guarantor, or of any business
acquired by the Company or any Guarantor for which financial statements and
financial data are or are required to be included in the Registration Statement)
addressed to each selling Holder and Underwriter of Registrable Securities, such
letters to be in customary form and covering matters of the type customarily
covered in "comfort" letters in connection with underwritten offerings and (iv)
deliver such documents and certificates as may be reasonably requested by the
Holders of a majority in principal amount of the Registrable Securities being
sold or the Underwriters, and which are customarily delivered in underwritten
offerings, to evidence the continued validity of the representations and
warranties of the Company and the Guarantors made pursuant to clause (i) above
and to evidence compliance with any customary conditions contained in an
underwriting agreement.

     In the case of a Shelf Registration Statement, the Company may require each
Holder of Registrable Securities to furnish to the Company such information
regarding such Holder and the proposed disposition by such Holder of such
Registrable Securities as the Company and the Guarantors may from time to time
reasonably request in writing.

     In the case of a Shelf Registration Statement, each Holder of Registrable
Securities agrees that, upon receipt of any notice from the Company and the
Guarantors of the happening of any event of the kind described in Section
3(e)(iii) or 3(e)(v) hereof, such Holder will forthwith discontinue disposition
of Registrable Securities pursuant to a Registration Statement until such
Holder's receipt of the copies of the supplemented or amended Prospectus
contemplated by Section 3(i) hereof and, if so directed by the Company and the
Guarantors, such Holder will deliver to the Company and the Guarantors all
copies in its possession, other than permanent file copies then in such Holder's
possession, of the Prospectus covering such Registrable Securities that is
current at the time of receipt of such notice.

     If the Company and the Guarantors shall give any such notice to suspend the
disposition of Registrable Securities pursuant to a Registration Statement, the
Company and the Guarantors shall extend the period during which the Registration
Statement shall be maintained effective pursuant to this Agreement by the number
of days during the period from and including the date of the giving of such
notice to and including the date when the Holders shall have received copies of
the supplemented or amended Prospectus necessary to resume such dispositions.
The Company and the Guarantors may give any such notice only twice during any
365-day period

                                       11
<PAGE>

and any such suspensions shall not exceed 30 days for each suspension and there
shall not be more than two suspensions in effect during any 365-day period.

     The Holders of Registrable Securities covered by a Shelf Registration
Statement who desire to do so may sell such Registrable Securities in an
Underwritten Offering. In any such Underwritten Offering, the investment banker
or investment bankers and manager or managers (the "Underwriters") that will
administer the offering will be selected by the Majority Holders of the
Registrable Securities included in such offering and shall be reasonably
acceptable to the Company and the Guarantors.

Section 4. Participation of Broker-Dealers in Exchange Offer.

     (a) The Staff has taken the position that any broker-dealer that receives
Exchange Securities for its own account in the Exchange Offer in exchange for
Securities that were acquired by such broker-dealer as a result of market-making
or other trading activities (a "Participating Broker-Dealer") may be deemed to
be an "underwriter" within the meaning of the Securities Act and must deliver a
prospectus meeting the requirements of the Securities Act in connection with any
resale of such Exchange Securities.

     The Company and the Guarantors understand that it is the Staff's position
that if the Prospectus contained in the Exchange Offer Registration Statement
includes a plan of distribution containing a statement to the above effect and
the means by which Participating Broker-Dealers may resell the Exchange
Securities, without naming the Participating Broker-Dealers or specifying the
amount of Exchange Securities owned by them, such Prospectus may be delivered by
Participating Broker-Dealers to satisfy their prospectus delivery obligation
under the Securities Act in connection with resales of Exchange Securities for
their own accounts, so long as the Prospectus otherwise meets the requirements
of the Securities Act.

     (b) In light of the above, and notwithstanding the other provisions of this
Agreement, the Company and the Guarantors agree to amend or supplement the
Prospectus contained in the Exchange Offer Registration Statement, as would
otherwise be contemplated by Section 3(i), for a period of up to 180 days after
the last Exchange Date (as such period may be extended pursuant to the
penultimate paragraph of Section 3 of this Agreement), if requested by the
Initial Purchasers or by one or more Participating Broker-Dealers, in order to
expedite or facilitate the disposition of any Exchange Securities by
Participating Broker-Dealers consistent with the positions of the Staff recited
in Section 4(a) above. The Company and the Guarantors further agree that
Participating Broker-Dealers shall be authorized to deliver such Prospectus
during such period in connection with the resales contemplated by this Section
4; and

     (c) The Initial Purchasers shall have no liability to the Company, any
Guarantor or any Holder with respect to any request that they may make pursuant
to Section 4(b) above.

Section 5. Indemnification and Contribution.

     (a) The Company and each Guarantor, jointly and severally, agree to
indemnify and hold harmless each Initial Purchaser and each Holder, their
respective affiliates and each Person,

                                       12
<PAGE>

if any, who controls any Initial Purchaser or any Holder within the meaning of
Section 15 of the Securities Act or Section 20 of the Exchange Act, from and
against any and all losses, claims, damages and liabilities (including, without
limitation, legal fees and other expenses incurred in connection with any suit,
action or proceeding or any claim asserted), joint or several, arising out of or
based upon any untrue statement or alleged untrue statement of a material fact
contained in any Registration Statement or any Prospectus, or arising out of or
based upon any omission or alleged omission to state therein a material fact
required to be stated therein or necessary in order to make the statements
therein, in the light of the circumstances under which they were made, not
misleading, except insofar as such losses, claims, damages or liabilities are
arising out of or based upon any untrue statement or omission or alleged untrue
statement or omission made in reliance upon and in conformity with any
information relating to any Initial Purchaser or any Holder furnished to the
Company in writing through the Initial Purchasers or any selling Holder
expressly for use therein. In connection with any Underwritten Offering
permitted by Section 3, the Company and the Guarantors will also indemnify the
Underwriters, if any, selling brokers, dealers and similar securities industry
professionals participating in the distribution, their respective affiliates and
each Person who controls such Persons (within the meaning of the Securities Act
and the Exchange Act) to the same extent as provided above with respect to the
indemnification of the Holders, if requested in connection with any Registration
Statement.

     (b) Each Holder agrees, severally and not jointly, to indemnify and hold
harmless the Company, the Guarantors, the Initial Purchasers and the other
selling Holders, their respective affiliates, the directors of the Company and
the Guarantors, each officer of the Company and the Guarantors who signed the
Registration Statement and each Person, if any, who controls the Company, the
Guarantors, any Initial Purchaser and any other selling Holder within the
meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act to
the same extent as the indemnity set forth in paragraph (a) above, but only with
respect to any losses, claims, damages or liabilities arising out of or based
upon any untrue statement or omission or alleged untrue statement or omission
made in reliance upon and in conformity with any information relating to such
Holder furnished to the Company in writing by such Holder expressly for use in
any Registration Statement and any Prospectus.

     (c) If any suit, action, proceeding (including any governmental or
regulatory investigation), claim or demand shall be brought or asserted against
any Person in respect of which indemnification may be sought pursuant to either
paragraph (a) or (b) above, such Person (the "Indemnified Person") shall
promptly notify the Person against whom such indemnification may be sought (the
"Indemnifying Person") in writing; provided that the failure to notify the
Indemnifying Person shall not relieve it from any liability that it may have
under this Section 5 except to the extent that it has been materially prejudiced
(through the forfeiture of substantive rights or defenses) by such failure; and
provided, further, that the failure to notify the Indemnifying Person shall not
relieve it from any liability that it may have to an Indemnified Person
otherwise than under this Section 5. If any such proceeding shall be brought or
asserted against an Indemnified Person and it shall have notified the
Indemnifying Person thereof, the Indemnifying Person shall retain counsel
reasonably satisfactory to the Indemnified Person to represent the Indemnified
Person and any others entitled to indemnification pursuant to this Section 5
that the Indemnifying Person may designate in such proceeding and shall pay the
fees and expenses of such counsel related to such proceeding. In any such
proceeding, any

                                       13
<PAGE>

Indemnified Person shall have the right to retain its own counsel, but the fees
and expenses of such counsel shall be at the expense of such Indemnified Person
unless (i) the Indemnifying Person and the Indemnified Person shall have
mutually agreed to the contrary; (ii) the Indemnifying Person has failed within
a reasonable time to retain counsel reasonably satisfactory to the Indemnified
Person; (iii) the Indemnified Person shall have reasonably concluded that there
may be legal defenses available to it that are different from or in addition to
those available to the Indemnifying Person; or (iv) the named parties in any
such proceeding (including any impleaded parties) include both the Indemnifying
Person and the Indemnified Person and representation of both parties by the same
counsel would be inappropriate due to actual or potential differing interests
between them. It is understood and agreed that the Indemnifying Person shall
not, in connection with any proceeding or related proceeding in the same
jurisdiction, be liable for the fees and expenses of more than one separate firm
(in addition to any local counsel) for all Indemnified Persons, and that all
such fees and expenses shall be reimbursed as they are incurred. Any such
separate firm (x) for any Initial Purchaser, its affiliates and any control
Persons of such Initial Purchaser shall be designated in writing by Credit
Suisse First Boston Corporation, (y) for any Holder, its affiliates and any
control Persons of such Holder shall be designated in writing by the Majority
Holders and (z) in all other cases shall be designated in writing by the
Company. The Indemnifying Person shall not be liable for any settlement of any
proceeding effected without its written consent, but if settled with such
consent or if there be a final judgment for the plaintiff, the Indemnifying
Person agrees to indemnify each Indemnified Person from and against any loss or
liability by reason of such settlement or judgment. Notwithstanding the
foregoing sentence, if at any time an Indemnified Person shall have requested
that an Indemnifying Person reimburse the Indemnified Person for fees and
expenses of counsel as contemplated by this paragraph, the Indemnifying Person
shall be liable for any settlement of any proceeding effected without its
written consent if (i) such settlement is entered into more than 30 days after
receipt by the Indemnifying Person of such request and (ii) the Indemnifying
Person shall not have reimbursed the Indemnified Person in accordance with such
request prior to the date of such settlement. No Indemnifying Person shall,
without the written consent of the Indemnified Person, effect any settlement of
any pending or threatened proceeding in respect of which any Indemnified Person
is or could have been a party and indemnification could have been sought
hereunder by such Indemnified Person, unless such settlement (A) includes an
unconditional release of such Indemnified Person in form and substance
satisfactory to such Indemnified Person from all liability on claims that are
the subject matter of such proceeding and (B) does not include any statement as
to or any admission of fault, culpability or a failure to act by or on behalf of
any Indemnified Person.

     (d) If the indemnification provided for in paragraphs (a) and (b) above is
unavailable to an Indemnified Person or insufficient in respect of any losses,
claims, damages or liabilities referred to therein, then each Indemnifying
Person under such paragraph, in lieu of indemnifying such Indemnified Person
thereunder, shall contribute to the amount paid or payable by such Indemnified
Person as a result of such losses, claims, damages or liabilities (i) in such
proportion as is appropriate to reflect the relative benefits received by the
Company and the Guarantors from the offering of the Securities, on the one hand,
and by the Holders from receiving Securities or Exchange Securities registered
under the Securities Act, on the other hand, or (ii) if the allocation provided
by clause (i) is not permitted by applicable law, in such proportion as is
appropriate to

                                       14
<PAGE>

reflect not only the relative benefits referred to in clause (i) but also the
relative fault of the Company and the Guarantors on the one hand and the Holders
on the other in connection with the statements or omissions that resulted in
such losses, claims, damages or liabilities, as well as any other relevant
equitable considerations. The relative fault of the Company and the Guarantors
on the one hand and the Holders on the other shall be determined by reference
to, among other things, whether the untrue or alleged untrue statement of a
material fact or the omission or alleged omission to state a material fact
relates to information supplied by the Company and the Guarantors or by the
Holders and the parties' relative intent, knowledge, access to information and
opportunity to correct or prevent such statement or omission.

     (e) The Company, the Guarantors and the Holders agree that it would not be
just and equitable if contribution pursuant to this Section 5 were determined by
pro rata allocation (even if the Holders were treated as one entity for such
purpose) or by any other method of allocation that does not take account of the
equitable considerations referred to in paragraph (d) above. The amount paid or
payable by an Indemnified Person as a result of the losses, claims, damages and
liabilities referred to in paragraph (d) above shall be deemed to include,
subject to the limitations set forth above, any legal or other expenses incurred
by such Indemnified Person in connection with any such action or claim.
Notwithstanding the provisions of this Section 5, in no event shall a Holder be
required to contribute any amount in excess of the amount by which the total
price at which the Securities or Exchange Securities sold by such Holder exceeds
the amount of any damages that such Holder has otherwise been required to pay by
reason of such untrue or alleged untrue statement or omission or alleged
omission. No Person guilty of fraudulent misrepresentation (within the meaning
of Section 11(f) of the Securities Act) shall be entitled to contribution from
any Person who was not guilty of such fraudulent misrepresentation.

     (f) The remedies provided for in this Section 5 are not exclusive and shall
not limit any rights or remedies that may otherwise be available to any
Indemnified Person at law or in equity.

     (g) The indemnity and contribution provisions contained in this Section 5
shall remain operative and in full force and effect regardless of (i) any
termination of this Agreement, (ii) any investigation made by or on behalf of
the Initial Purchasers, or Holder their respective affiliates or any Person
controlling any Initial Purchaser or any Holder, or by or on behalf of the
Company, the Guarantors, their respective affiliates or the officers or
directors of or any Person controlling the Company or the Guarantors, (iii)
acceptance of any of the Exchange Securities and (iv) any sale of Registrable
Securities pursuant to a Shelf Registration Statement.

Section 6. Miscellaneous.

     (a) No Inconsistent Agreements. The Company and the Guarantors represent,
warrant and agree that (i) the rights granted to the Holders hereunder do not in
any way conflict with and are not inconsistent with the rights granted to the
holders of any other outstanding securities issued or guaranteed by the Company
or any Guarantor under any other agreement and (ii) neither the Company nor any
Guarantor has entered into, or on or after the date of this Agreement will enter
into, any agreement that is inconsistent with the rights granted to the

                                       15
<PAGE>

Holders of Registrable Securities in this Agreement or otherwise conflicts with
the provisions hereof.

     (b) Amendments and Waivers. The provisions of this Agreement, including the
provisions of this sentence, may not be amended, modified or supplemented, and
waivers or consents to departures from the provisions hereof may not be given
unless the Company and the Guarantors have obtained the written consent of
Holders of at least a majority in aggregate principal amount of the outstanding
Registrable Securities affected by such amendment, modification, supplement,
waiver or consent; provided that no amendment, modification, supplement, waiver
or consent to any departure from the provisions of Section 5 hereof shall be
effective as against any Holder of Registrable Securities unless consented to in
writing by such Holder.

     (c) Notices. All notices and other communications provided for or permitted
hereunder shall be made in writing by hand-delivery, registered first-class
mail, telex, telecopier, or any courier guaranteeing overnight delivery (i) if
to a Holder, at the most current address given by such Holder to the Company by
means of a notice given in accordance with the provisions of this Section 6(c),
which address initially is, with respect to the Initial Purchasers, the address
set forth in the Purchase Agreement; and (ii) if to the Company and the
Guarantors, initially at the Company's address set forth in the Purchase
Agreement and thereafter at such other address, notice of which is given in
accordance with the provisions of this Section 6(c). All such notices and
communications shall be deemed to have been duly given: at the time delivered by
hand, if personally delivered; five Business Days after being deposited in the
mail, postage prepaid, if mailed; when answered back, if telexed; when receipt
is acknowledged, if telecopied; and on the next Business Day if timely delivered
to an air courier guaranteeing overnight delivery. Copies of all such notices,
demands or other communications shall be concurrently delivered by the Person
giving the same to the applicable Trustee, at the address specified in the
Indenture.

     (d) Successors and Assigns. This Agreement shall inure to the benefit of
and be binding upon the successors, assigns and transferees of each of the
parties, including, without limitation and without the need for an express
assignment, subsequent Holders; provided that nothing herein shall be deemed to
permit any assignment, transfer or other disposition of Registrable Securities
in violation of the terms of the Purchase Agreement. If any transferee of any
Holder shall acquire Registrable Securities in any manner, whether by operation
of law or otherwise, such Registrable Securities shall be held subject to all
the terms of this Agreement, and by taking and holding such Registrable
Securities such Person shall be conclusively deemed to have agreed to be bound
by and to perform all of the terms and provisions of this Agreement and such
Person shall be entitled to receive the benefits hereof. The Initial Purchasers
(in their capacity as Initial Purchasers) shall have no liability or obligation
to the Company or the Guarantors with respect to any failure by a Holder to
comply with, or any breach by any Holder of, any of the obligations of such
Holder under this Agreement.

     (e) Purchases and Sales of Securities. The Company and the Guarantors shall
not, and shall use their reasonable best efforts to cause their affiliates (as
defined in Rule 405 under the Securities Act) not to, purchase and then resell
or otherwise transfer any Registrable Securities.

                                       16
<PAGE>

     (f) Third Party Beneficiaries. Each Holder shall be a third party
beneficiary to the agreements made hereunder between the Company and the
Guarantors, on the one hand, and the Initial Purchasers, on the other hand, and
shall have the right to enforce such agreements directly to the extent it deems
such enforcement necessary or advisable to protect its rights or the rights of
other Holders hereunder.

     (g) Counterparts. This Agreement may be executed in any number of
counterparts and by the parties hereto in separate counterparts, each of which
when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement.

     (h) Headings. The headings in this Agreement are for convenience of
reference only and shall not limit or otherwise affect the meaning hereof.

     (i) GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK. THE COMPANY AND THE
GUARANTORS EACH HEREBY AGREES TO SUBMIT TO THE JURISDICTION OF THE COURTS OF THE
STATE OF NEW YORK, COUNTY OF NEW YORK, IN ANY ACTION OR PROCEEDING ARISING OUT
OF OR RELATING TO THIS AGREEMENT.

     (j) Miscellaneous. This Agreement contains the entire agreement between the
parties relating to the subject matter hereof and supersedes all oral statements
and prior writings with respect thereto. This Agreement may not be amended or
modified except by a writing executed by each of the parties hereto. Section
headings herein are for convenience only and are not a part of this Agreement.
If any term, provision, covenant or restriction contained in this Agreement is
held by a court of competent jurisdiction to be invalid, void or unenforceable
or against public policy, the remainder of the terms, provisions, covenants and
restrictions contained herein shall remain in full force and effect and shall in
no way be affected, impaired or invalidated. The Company, the Guarantors and the
Initial Purchasers shall endeavor in good faith negotiations to replace the
invalid, void or unenforceable provisions with valid provisions the economic
effect of which comes as close as possible to that of the invalid, void or
unenforceable provisions.

                     [REMAINDER OF PAGE INTENTIONALLY BLANK]

                                       17
<PAGE>

     IN WITNESS WHEREOF, the parties have executed this Agreement as of the date
first written above.

                                         TRIMAS CORPORATION

                                         By: /s/ R. Jeffrey Pollock
                                             -----------------------------------
                                             Name:  R. Jeffrey Pollock
                                             Title: Secretary

                                         EACH OF THE GUARANTORS
                                         LISTED ON SCHEDULE I HERETO:

                                         By: /s/ R. Jeffrey Pollock
                                             -----------------------------------
                                             Name:  R. Jeffrey Pollock
                                             Title: Secretary

                                         EACH OF THE GUARANTORS
                                         LISTED ON SCHEDULE II HERETO:

                                         By: /s/ Todd R. Peters
                                             -----------------------------------
                                             Name:  Todd R. Peters
                                             Title: Vice President, Finance

                                       18
<PAGE>

Confirmed and accepted as of the date first written above:

CREDIT SUISSE FIRST BOSTON CORPORATION
J.P. MORGAN SECURITIES INC.
FIRST UNION SECURITIES, INC.
DEUTSCHE BANK SECURITIES INC.
COMERICA SECURITIES, INC.
NATCITY INVESTMENTS, INC.
   Acting on behalf of themselves
   and as the Representatives of
   the several Purchasers

   By  CREDIT SUISSE FIRST BOSTON CORPORATION

       By: /s/ Justin Vorwerk
           -----------------------------------
           Name:  Justin Vorwerk
           Title: Managing Director

                                       19
<PAGE>

                                   SCHEDULE I

                              Arrow Engine Company
                           Commonwealth Industries LLC
                               Compac Corporation
                             Consumer Products, Inc
                                Cuyam Corporation
                                 Di-Rite Company
                                 Draw-Tite, Inc.
                          Entegra Fastener Corporation
                        Fulton Performance Products, Inc.
                               Hitch 'N Post, Inc.
                                Keo Cutters, Inc.
                             K.S. Disposition, Inc.
                           Lake Erie Screw Corporation
                       Monogram Aerospace Fasteners, Inc.
                            Netcong Investments, Inc.
                         NI Foreign Military Sales Corp.
                               NI Industries, Inc.
                                  NI West, Inc.
                             Norris Cylinder Company
                       Norris Environmental Services, Inc.
                             Norris Industries, Inc.
                               Plastic Form, Inc.
                              Reese Products, Inc.
                           Reska Spline Products, Inc.
                            Richards Micro-Tool, Inc.
                                Rieke Corporation
                         Rieke Leasing Co., Incorporated
                             Rieke of Indiana, Inc.
                              Rieke of Mexico, Inc.
                               TriMas Company LLC
                             TriMas Fasteners, Inc.
                              TriMas Services Corp.
                               Wesbar Corporation

                                       20
<PAGE>

                                   SCHEDULE II

                          Beaumont Bolt & Gasket, Inc.
                         Industrial Bolt & Gasket, Inc.
                             Lamons Metal Gasket Co.
                           Louisiana Hose & Rubber Co.

                                       21<PAGE>

                            STOCK PURCHASE AGREEMENT

                                   dated as of

                                  May 17, 2002

                                      among

                      HEARTLAND INDUSTRIAL PARTNERS, L.P.,

                               TRIMAS CORPORATION

                                       and

                              METALDYNE CORPORATION

                      relating to the issuance and purchase

                                 of Common Stock

                                       of

                               TRIMAS CORPORATION

<PAGE>

                                TABLE OF CONTENTS

                                                                            Page
                                                                            ----
                                    ARTICLE 1

                                   DEFINITIONS

SECTION 1.01.    Definitions..................................................1

                                    ARTICLE 2

                              ISSUANCE AND PURCHASE

SECTION 2.01.    Issuance and Purchase.......................................11
SECTION 2.02.    Closing.....................................................11
SECTION 2.03.    Closing Obligations.........................................12
SECTION 2.04.    Treatment of Parent Options and Restricted Stock Awards
                   Held by Employees of the Company .........................12

                                    ARTICLE 3

                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

SECTION 3.01.    Corporate Existence and Power...............................13
SECTION 3.02.    Corporate Authorization.....................................13
SECTION 3.03.    Governmental Authorization..................................14
SECTION 3.04.    Non-Contravention...........................................14
SECTION 3.05.    Capitalization..............................................14
SECTION 3.06.    Company Subsidiaries........................................15
SECTION 3.07.    Financial Statements........................................16
SECTION 3.08.    Absence of Certain Changes..................................16
SECTION 3.09.    No Undisclosed Material Liabilities.........................16
SECTION 3.10.    Compliance with Laws and Court Orders.......................16
SECTION 3.11.    Litigation..................................................17
SECTION 3.12.    Finders' Fee................................................17
SECTION 3.13.    Taxes.......................................................17
SECTION 3.14.    Employee Benefit Plans......................................17
SECTION 3.15.    Financing...................................................19
SECTION 3.16.    Disclaimer of Other Representations and Warranties..........20

                                      -i-

<PAGE>

                                    ARTICLE 4

                    REPRESENTATIONS AND WARRANTIES OF PARENT

SECTION 4.01.    Corporate Existence and Power...............................20
SECTION 4.02.    Corporate Authorization.....................................20
SECTION 4.03.    Governmental Authorization..................................21
SECTION 4.04.    Non-Contravention...........................................21
SECTION 4.05.    SEC Filings.................................................21
SECTION 4.06.    Preemptive Rights...........................................21
SECTION 4.07.    Disclaimer of Other Representations and Warranties..........22

                                    ARTICLE 5

                     REPRESENTATIONS AND WARRANTIES OF BUYER

SECTION 5.01.    Partnership Existence and Power.............................22
SECTION 5.02.    Partnership Authorization...................................22
SECTION 5.03.    Governmental Authorization..................................22
SECTION 5.04.    Non-Contravention...........................................23
SECTION 5.05.    Fees........................................................23
SECTION 5.06.    Other Buyer Representation and Warranties...................23

                                    ARTICLE 6

                       COVENANTS OF PARENT AND THE COMPANY

SECTION 6.01.    Amendment and Restatement of Articles of Incorporation
                   and By-laws.................. ............................24
SECTION 6.02.    Contribution of Capital Stock of Subsidiaries...............24
SECTION 6.03.    Declaration and Payment of Dividend.........................24
SECTION 6.04.    Repayment of Debt...........................................24
SECTION 6.05.    Financing Arrangements......................................24
SECTION 6.06.    Conduct of the Company......................................25
SECTION 6.07.    Access to Information.......................................26
SECTION 6.08.    Reports.....................................................27
SECTION 6.09.    Other Agreements............................................27
SECTION 6.10.    Debt Repayment..............................................27
SECTION 6.11.    Expenses Indemnification....................................27

                                      -ii-

<PAGE>

                                    ARTICLE 7

                   COVENANTS OF BUYER, PARENT AND THE COMPANY

SECTION 7.01.    Commercially Reasonable Efforts.............................28
SECTION 7.02.    Certain Filings.............................................29
SECTION 7.03.    Public Announcements........................................29
SECTION 7.04.    Notices of Certain Events...................................29
SECTION 7.05.    Confidentiality.............................................30
SECTION 7.06.    Intercompany Accounts.......................................30
SECTION 7.07.    Intercompany Agreements; Guarantees.........................30
SECTION 7.08.    Tax Matters.................................................31
SECTION 7.09.    Plans.......................................................35

                                    ARTICLE 8

                              CONDITIONS TO CLOSING

SECTION 8.01.    Conditions to Obligations of Each Party.....................40
SECTION 8.02.    Conditions to the Obligations of Buyer......................41
SECTION 8.03.    Conditions to the Obligations of Parent.....................42

                                    ARTICLE 9

                            OBLIGATIONS AFTER CLOSING

SECTION 9.01.    Indemnification.............................................43
SECTION 9.02.    Treatment of Shared Contracts...............................43
SECTION 9.03.    Procedures..................................................44
SECTION 9.04.    Limitations on Indemnification..............................44

                                   ARTICLE 10

                                   TERMINATION

SECTION 10.01.   Termination.................................................45
SECTION 10.02.   Effect of Termination.......................................46

                                     -iii-

<PAGE>

                                   ARTICLE 11

                                  MISCELLANEOUS

SECTION 11.01.   Notices.....................................................46
SECTION 11.02.   Survival of Representations and Warranties..................47
SECTION 11.03.   Amendments; No Waivers......................................47
SECTION 11.04.   Expenses....................................................47
SECTION 11.05.   Successors and Assigns......................................47
SECTION 11.06.   Governing Law...............................................48
SECTION 11.07.   WAIVER OF JURY TRIAL........................................48
SECTION 11.08.   Counterparts; Effectiveness.................................48
SECTION 11.09.   Entire Agreement............................................48
SECTION 11.10.   Captions....................................................48
SECTION 11.11.   Severability................................................48

EXHIBITS
--------

Exhibit A    -    Form of Corporate Services Agreement
Exhibit B    -    Form of Shareholders Agreement
Exhibit C    -    Form of Warrant
Exhibit D    -    Form of Monitoring Agreement
Exhibit E    -    Form of Amended and Restated TriMas Articles of Incorporation
Exhibit F    -    Form of Amended and Restated TriMas By-laws

SCHEDULES
---------

Schedule 1.01(a)  - Liabilities
Schedule 1.01(b)  - Other Liabilities
Schedule 1.01(c)  - Employees
Schedule 1.01(d)  - Knowledge of Officers
Schedule 3.03     - Filings, Notices and Reports
Schedule 3.04     - Non-Contravention
Schedule 3.06(b)  - Company Subsidiaries
Schedule 3.11     - Litigation
Schedule 3.13     - Taxes
Schedule 4.04     - Non-Contravention
Schedule 7.07(a)  - Internal Indemnities
Schedule 7.07(b)  - Shared Contracts

                                      -iv-

<PAGE>

Schedule 7.07(c)      - Guarantees
Schedule 7.09(c)(iii) - Actuarial Assumptions
Schedule 7.09(d)(i)   - Parent's Savings Plans
Schedule 7.09(d)(ii)  - Stand-Alone Plans
Schedule 7.09(e)      - Collective Bargaining Agreements
Schedule 7.09(f)(i)   - Employment Agreements
Schedule 7.09(f)(iii) - Foreign Plans
Schedule 8.01         - Parent Credit Agreement Modifications Summary

                                      -v-

<PAGE>

                            STOCK PURCHASE AGREEMENT

        AGREEMENT dated as of May 17, 2002 among Heartland Industrial Partners,
L.P. ("BUYER"), TriMas Corporation ("TRIMAS" or the "COMPANY"), a Delaware
corporation and an indirect wholly-owned subsidiary of Metaldyne Corporation, a
Delaware corporation ("PARENT"), and Parent.

                              W I T N E S S E T H :
                              - - - - - - - - - -

        WHEREAS, TriMas is engaged itself and through its subsidiaries, in the
manufacture, sale and distribution of commercial, industrial and consumer
products; and

        WHEREAS, the Company desires to issue and Buyer desires to purchase
13,250,000 authorized but unissued shares of common stock, par value $0.01 per
share (the "COMMON STOCK"), of the Company for the consideration and on the
terms set forth in this Agreement; and

        WHEREAS, the respective Boards of Directors of Parent and the Company
and the General Partner of Buyer have each approved, as applicable, the issuance
and sale of the Shares to Buyer pursuant to the terms of this Agreement, the
Financing Agreements, the declaration and payment of the dividend described
herein, the payment by the Company and the Company Subsidiaries of the Pay Down
Amount, the Subsidiary Drop Down and the other transactions contemplated hereby
(all as described or defined herein and collectively, the "TRANSACTIONS");

        NOW, THEREFORE, in consideration of the foregoing and the mutual
promises herein made, and in consideration of the representations, warranties
and covenants herein contained, the parties hereto hereby agree as follows:

                                    ARTICLE 1

                                   DEFINITIONS

        SECTION 1.01. Definitions. (a) The following terms, as used herein, have
the following meanings:

        "ACTION" means any action, claim, suit, arbitration, subpoena, discovery
request, proceeding or investigation by or before any court or grand jury, any
Governmental Authority or arbitration tribunal.

<PAGE>

        "AFFILIATE" means, with respect to any Person, any other Person directly
or indirectly controlling, controlled by or under common control with such
Person including by management contract or similar instrument.

        "ANTITRUST LAWS" means the Sherman Act, as amended, the Clayton Act, as
amended, the HSR Act, the Federal Trade Commission Act, as amended, and all
other federal, state and foreign statutes, rules, regulations, orders, decrees,
administrative and judicial doctrines and other laws that are designed or
intended to prohibit, restrict or regulate actions having the purpose or effect
of monopolization or restraint of trade or lessening of competition through
merger or acquisition.

        "BENEFIT PLAN" means any Plan, other than a Multiemployer Plan or a
Foreign Plan, existing on the Closing Date established or to which contributions
have at any time been made by the Company or any Company Subsidiary, or any
predecessor of the Company or any Company Subsidiary, or with respect to which
the Company or any Company Subsidiary is a party, under which any employee,
former employee or director of the Company or any Company Subsidiary, or any
beneficiary thereof, is covered, is eligible for coverage or has benefit rights
in respect of service to the Company or any Company Subsidiary and any other
Plan with respect to which the Company or any Company Subsidiary currently has
liability.

        "BOARD OF DIRECTORS" means the Board of Directors of Parent or the
Company, as the case may be.

        "BUSINESS DAY" means a day other than Saturday, Sunday or any other day
on which commercial banks in New York, New York are authorized or required by
law to close.

        "CODE" means the Internal Revenue Code of 1986, as amended.

        "COMMON STOCK" means the common stock, par value $0.01 per share, of the
Company.

        "COMMONWEALTH BUSINESS" means an unincorporated division of the Company
formerly engaged in an automotive related business whose operations have been
discontinued.

        "COMPANY BALANCE SHEET" means the unaudited consolidated balance sheet
of the Company and the Company Subsidiaries as of March 31, 2002 and the
footnotes thereto.

        "COMPANY BALANCE SHEET DATE" means March 31, 2002.

        "COMPANY LIABILITIES" means any and all Liabilities of Parent or any of
its Subsidiaries of any kind or nature to the extent resulting from or arising
out of the present,

                                      -2-
<PAGE>

past or future operation or conduct of the business, operations and assets of
the Company or of any Company Subsidiary, and shall mean:

             (i) all environmental, health or other Liabilities of any kind and
        nature to the extent arising from the businesses, operations and assets
        of the Company or the Company Subsidiaries whenever such businesses,
        operations or assets shall have been conducted or owned by the Company
        or any Company Subsidiary and regardless of whether such Liabilities
        shall arise prior to, on or after the date hereof, including without
        limitation, those Company Liabilities set forth on Schedule 1.01(a);

             (ii) 42.01% of any Liabilities described in Schedule 1.01(b);

             (iii) the Company's portion, determined pursuant to Section 9.02
        hereof, of Shared Contractual Liabilities;

             (iv) all Liabilities arising from acquisitions by the Company or
        any Company Subsidiary of any business or former business of the Company
        or any Company Subsidiary or from the acquisition agreements and other
        related documents entered into in connection with such acquisitions
        whether such Losses shall arise prior to, on or after the date hereof;

             (v) all Liabilities arising from acquisitions by Parent or any of
        Parent's Subsidiaries of any business or assets or former business or
        former assets of the Company or any of the Company Subsidiaries or from
        the acquisition agreements and other related documents entered into in
        connection with such acquisitions whether such Liabilities shall arise
        prior to, on or after the date hereof;

             (vi) all Liabilities arising from or under the MascoTech, Inc. Key
        Employee Retention Plan to the extent such Liabilities relate to
        Transferred Employees who participate in such plan;

             (vii) all Losses incurred by Parent arising from the failure of the
        Company to perform any of its obligations set forth in Section 7.08 and
        Section 7.09;

             (viii) all Liabilities arising from actions taken by employees of
        Parent or its Subsidiaries for or on behalf of the Company or any
        Company Subsidiary arising from the provision of services under the
        Corporate Services Agreement or services otherwise provided by Parent or
        its Subsidiaries for or on behalf of the Company and the Company
        Subsidiaries after the Closing;

             (ix) all Liabilities arising from the financing by the Company of
        the Transactions (including, without limitation, any representation of
        the Company in connection

                                      -3-
<PAGE>

        with the Facilities or the Senior Subordinated Notes and any
        registration of securities in connection therewith); and

             (x) all Liabilities not otherwise covered in the preceding clauses
        (i) through (ix) or in Section 9.01(c) or Section 9.02 that the chief
        executive officer of Parent determines to be Liabilities of the Company
        or any Company Subsidiary such determination being conclusively binding
        on the Company and the Company Subsidiaries and 42.01% of all other
        Liabilities not so covered and not so determined to be Liabilities of
        the Company or the Company Subsidiaries, including without limitation
        any Liabilities arising from events occurring prior to the Closing not
        associated or attributable to either the present or former business of
        the Company or the Company Subsidiaries, on the one hand, or the present
        or former business of Parent or any of its Subsidiaries, on the other.

        For purposes of this definition, "FORMER BUSINESS" of the Company, or
any Company Subsidiary shall not include any such former business which was
conducted by Parent or any of its Subsidiaries for the sole benefit of Parent or
any of its Subsidiaries (other than the Company or any Company Subsidiary) after
such former business was conducted by the Company or any Company Subsidiary.

        "COMPANY SUBSIDIARY" means any Subsidiary of the Company.

        "CORPORATE EMPLOYEES" means the corporate level employees or former
employees of Parent who are listed or referred to in Part I of Schedule 1.01(c)
and, therefore, allocated to the Company and the Company Subsidiaries for
purposes of responsibility for any retiree health obligations, severance
obligations and restricted stock redemption expenses, as set forth in this
Agreement.

        "CORPORATE SERVICES AGREEMENT" means the Corporate Services Agreement
between Parent and the Company to be dated as of the Closing Date and containing
substantially the terms set forth in Exhibit A attached hereto.

        "EMPLOYEES" means employees employed by the Company or one of the
Company Subsidiaries on the Closing Date.

        "ERISA" means the Employee Retirement Income Security Act of 1974.

        "ERISA AFFILIATE" of any Person means any other Person that, together
with such Person, would be treated as a single employer under Section 414 of the
Code.

        "FAIRNESS OPINION" means the Fairness Opinion of Valuation Research
Corporation, as to the fairness, from a financial point of view, of the
consideration received by

                                      -4-
<PAGE>

Parent and the financial terms of the documents entered into in connection with
the Transactions.

        "FORMER EMPLOYEE" means (a) any person whose employment by the Company
or one of the Company Subsidiaries was terminated on or before the Closing Date
(whether by retirement or otherwise), excluding persons who were employed by
Parent or one of its Subsidiaries (other than the Company or any Company
Subsidiary) subsequent to such termination prior to the Closing Date, and (b) an
Employee who is on short-term medical disability as of the Closing Date and who
thereafter becomes eligible for long-term medical disability.

        "GENERAL PARTNER OF BUYER" means Heartland Industrial Associates L.L.C.

        "GOVERNMENTAL AUTHORITY" means any federal, state or local government or
any court, administrative agency or commission or other governmental or
regulatory agency, authority or official, whether domestic, foreign or
supranational.

        "GUARANTEE" means a direct or indirect guarantee (other than by
endorsement of negotiable instruments for collection) by any Person of any
indebtedness of any other Person and includes any obligation, direct or
indirect, contingent or otherwise, of such Person: (1) to purchase or pay (or
advance or supply funds for the purchase or payment of) indebtedness of such
other Person (whether arising by virtue of partnership arrangements, or by
agreements to keep-well, to purchase assets, goods, securities or services
(unless such purchase arrangements are on arm's-length terms and are entered
into in the ordinary course of business), to take-or-pay, or to maintain
financial statement conditions or otherwise); or (2) entered into for purposes
of assuring in any other manner the obligee of such indebtedness of the payment
thereof or to protect such obligee against loss in respect thereof (in whole or
in part). The amount of any Guarantee of any Person at any date shall be the
outstanding balance at such date of all unconditional obligations in respect of
which such Guarantee is made and the maximum liability of such other Person for
any such contingent obligations in respect of which such Guarantee is made at
such date. "GUARANTEE," when used as a verb, and "GUARANTEED" have correlative
meanings.

        "HSR ACT" means the Hart-Scott-Rodino Antitrust Improvements Act of
1976, as amended, and the rules and regulations promulgated thereunder.

        "KNOWLEDGE" of the Company means the actual knowledge of the senior
officers of the Company listed on Schedule 1.01(d) attached hereto.

        "LIABILITIES" means any and all indebtedness, liabilities or
obligations, whether accrued, fixed or contingent, mature or inchoate, known or
unknown, reflected on a balance sheet or otherwise, including, but not limited
to, those arising under any law, rule, regulation,

                                      -5-
<PAGE>

Action, order, injunction or consent decree of any Governmental Authority or any
judgment of any court of any kind or any award of any arbitrator of any kind,
and those arising under any contract, commitment or undertaking.

        "LIEN" means, with respect to any property or asset, any mortgage, lien,
pledge, charge, security interest or encumbrance of any kind in respect of such
property or asset.

        "LOSSES" means any and all damages, losses, deficiencies, Liabilities,
obligations, penalties, judgments, settlements, claims, payments, fines,
interest, costs and expenses (including, without limitation, the costs and
expenses of any and all Actions and demands, assessments, judgments, settlements
and compromises relating thereto and the reasonable costs and expenses of
attorneys', accountants', consultants' and other professionals' fees and
expenses incurred in the investigation or defense thereof or the enforcement of
rights hereunder), including direct and consequential damages, but excluding
punitive damages (other than punitive damages awarded to any third party against
an Indemnified Party).

        "MATERIAL ADVERSE EFFECT" means either (i) a material adverse effect on
the condition (financial or otherwise), business or results of operations of the
Company and the Company Subsidiaries, taken as a whole, or (ii) an effect which
is materially adverse to the ability of the Company to consummate the
Transactions; provided that with respect to subclause (i) of this definition,
any such effect resulting or arising from (w) this Agreement or the Transactions
contemplated hereby or the announcement thereof, (x) changes in circumstances or
conditions affecting industrial manufacturing companies in general, and not
specifically relating to the Company and the Company Subsidiaries, (y) changes
in general economic, regulatory or political conditions or in financial markets
in the United States or Europe or (z) changes in generally accepted accounting
principles shall not be considered a Material Adverse Effect, and with respect
to subclause (ii) of this definition, any such effect resulting or arising from
subclause (x), (y) or (z) above shall not be considered a Material Adverse
Effect.

        "MATERIAL SUBSIDIARY" means, with respect to any Person, a Subsidiary
that would constitute a "significant subsidiary" of such Person within the
meaning of Rule 1-02 of Regulation S-X under the 1934 Act.

        "MONITORING AGREEMENT" means the Monitoring Agreement between Heartland
Industrial Group LLC and the Company to be dated as of the Closing Date and
containing substantially the terms set forth in Exhibit D attached hereto.

        "MULTIEMPLOYER PLAN" means a multiemployer plan within the meaning of
Section 4001(a)(3) of ERISA with respect to which the Company has an obligation
to contribute or has or could have withdrawal liability under Section 4201 of
ERISA.

                                      -6-
<PAGE>

        "1933 ACT" means the Securities Act of 1933, as amended, and the rules
and regulations promulgated thereunder.

        "1934 ACT" means the Securities Exchange Act of 1934, as amended, and
the rules and regulations promulgated thereunder.

        "OFFICER'S CERTIFICATE" means a certificate signed by an officer of
Parent or the Company, as the case may be and, in the case of Buyer, the
managing member of the General Partner of Buyer.

        "PARENT CREDIT AGREEMENT" means the Metaldyne Credit Agreement dated as
of November 28, 2000, among Metaldyne Corporation (f/k/a MascoTech, Inc.), the
subsidiary term borrowers party thereto and Chase Manhattan Bank, as
Administrative Agent.

        "PARENT LIABILITIES" means any and all Liabilities of the Company or any
Company Subsidiary of any kind or nature to the extent resulting from or arising
out of the present, past or future operation or conduct of the business,
operations and assets of Parent or any of Parent's Subsidiaries (other than the
Company and any Company Subsidiary), and shall mean:

             (i) all environmental, health or other Liabilities of any kind and
        nature to the extent arising from the businesses, operations and assets
        of Parent or any of Parent's Subsidiaries (other than the Company and
        any Company Subsidiary) whenever such businesses, operations or assets
        shall have been conducted or owned and regardless of whether such
        Liabilities shall arise prior to, on or after the date hereof, including
        without limitation, those Parent Liabilities set forth on Schedule
        1.01(a);

             (ii) 57.99% of any Liabilities described in Schedule 1.01(b);

             (iii) Parent's portion, determined pursuant to Section 9.02 hereof,
        of Shared Contractual Liabilities;

             (iv) all Liabilities arising from acquisitions by Parent or any of
        Parent's Subsidiaries (other than the Company and any Company
        Subsidiary) of any business or former business of Parent or any of
        Parent's Subsidiaries (other than the business of the Company and any
        Company Subsidiary) or from the acquisition agreements and other related
        documents entered into in connection with such acquisitions whether such
        Liabilities shall arise prior to, on or after the date hereof;

             (v) all Losses incurred by the Company arising from the failure of
        Parent to perform any of its obligations set forth in Section 7.08 and
        Section 7.09; and

                                      -7-
<PAGE>

             (vi) all Liabilities not otherwise covered in the preceding clauses
        (i) through (v) or in Section 9.01(c) or Section 9.02 that the chief
        executive officer of Parent determines to be Liabilities of Parent or
        any of its Subsidiaries (other than the Company or the Company
        Subsidiaries) such determination being conclusively binding on Parent
        and its Subsidiaries and 57.99% of all other Liabilities not so covered
        and not so determined to be Liabilities of Parent or any of its
        Subsidiaries (other than the Company or the Company Subsidiaries),
        including, without limitation, any Liabilities arising from events
        occurring prior to the Closing not associated or attributable to either
        the present or former business of the Company or the Company
        Subsidiaries, on the one hand, or the present or former business of
        Parent or any of its Subsidiaries (other than the Company or the Company
        Subsidiaries), on the other.

        For purposes of this definition, "FORMER BUSINESS" of Parent or any of
its Subsidiaries (other than the Company or the Company Subsidiaries) shall not
include any such former business which was conducted by the Company or any
Company Subsidiary for the sole benefit of the Company or any Company Subsidiary
after such former business was conducted by Parent or any of its Subsidiaries
(other than the Company or the Company Subsidiaries).

        "PARENT RECEIVABLES PURCHASE AGREEMENT" means the Receivables Purchase
Agreement as amended and supplemented, dated as of November 28, 2000 by and
among Metaldyne Corporation (f/k/a MascoTech, Inc.), the Sellers party thereto
and MTSPC, Inc.

        "PARENT SHAREHOLDERS AGREEMENT" means the Shareholders Agreement by and
among Metaldyne Corporation (f/k/a MascoTech, Inc.), Masco Corporation, Richard
Manoogian, the Richard and Jane Manoogian Foundation, the Heartland entities
listed on the signature pages thereto and the HIP Co-Investors listed on the
signature pages thereto, dated as of November 28, 2000, as amended.

        "PBGC" means the Pension Benefit Guaranty Corporation established
pursuant to Section 4002 of ERISA, or any successor thereto.

        "PERSON" means an individual, corporation, partnership, limited
liability company, association, trust or other entity or organization, including
a Governmental Authority.

        "PLAN" means any bonus, incentive compensation, deferred compensation,
pension, profit sharing, retirement, stock purchase, stock option, stock
ownership, stock appreciation rights, phantom stock, leave of absence, layoff,
vacation, day or dependent care, legal services, cafeteria, life, health,
accident, disability, workmen's compensation or other insurance, severance,
separation, other employee benefit, employment, consulting or change of control
agreement, plan, practice, policy or arrangement of any kind, whether written or
oral, or whether for the benefit of a single individual or more than one
individual, including,

                                      -8-
<PAGE>

without limitation, any "employee benefit plan" within the meaning of Section
3(3) of ERISA (whether or not subject thereto).

        "PREEMPTIVE RIGHTS NOTICE" means the Preemptive Rights Notice dated May
14, 2002 mailed by Parent pursuant to Section 4.05 of the Parent Shareholders
Agreement.

        "SEC" means the Securities and Exchange Commission.

        "SENIOR SUBORDINATED NOTES" means $250 million aggregate principal
amount of Senior Subordinated Notes to be issued on the Closing Date to finance
the Transactions.

        "SHARED CONTRACTS" shall mean contracts with third parties (including,
without limitation, those contracts with third parties set forth on Schedule
7.07(b)) which directly benefit both Parent or one of its Subsidiaries or the
Company or one of the Company Subsidiaries or which directly benefit the Company
or one of the Company Subsidiaries.

        "SHARED CONTRACTUAL LIABILITIES" shall mean Liabilities in respect of
Shared Contracts.

        "SHAREHOLDERS AGREEMENT" means the TriMas Corporation Shareholders
Agreement among the shareholders named therein to be dated as of the Closing
Date and containing substantially the terms set forth in Exhibit B attached
hereto.

        "SHARES" means 13,250,000 shares of Common Stock of the Company,
representing approximately 66% of the outstanding capital stock of the Company
immediately after the Closing.

        "SUBSIDIARY" means, with respect to any Person, any corporation,
partnership, association, limited liability company or other organization,
whether incorporated or unincorporated, of which the securities or other
ownership interests having ordinary voting power to elect a majority of the
board of directors or other persons performing similar functions with respect to
such corporation, partnership, association, limited liability company or other
organization are at any time directly or indirectly owned or controlled by such
Person or by any one or more of its Subsidiaries, or by such Person and one or
more of its Subsidiaries.

        "TAX BENEFIT" means the amount of any refund, credit or reduction in
otherwise required Tax payments, including any interest receivable thereon,
actually realized, provided that, for these purposes, Tax items shall be taken
into account in accordance with the ordering principles of the Code or other
applicable law.

                                      -9-
<PAGE>

        "TMS HOLDINGS LLC" means TMS Holdings LLC, a Delaware limited liability
company and a direct wholly-owned Subsidiary of the Company.

        "WARRANT" means the Warrant to purchase 750,000 shares of Common Stock
between the Company and Parent to be dated as of the Closing Date and containing
substantially the terms set forth in Exhibit C attached hereto.

        Any reference in this Agreement to a statute shall be to such statute as
amended from time to time and to the rules and regulations promulgated
thereunder.

        (b) Each of the following terms is defined herein in the Section set
forth opposite such term:

        TERM                                                    SECTION

        Actuary Firm......................................        7.09
        Bank..............................................        3.15
        Buyer.............................................      Recitals
        Buyer Representatives.............................        6.07
        Closing...........................................        2.02
        Closing Date......................................        2.02
        Commitment Letter.................................        3.15
        Common Stock......................................      Recitals
        Company...........................................      Recitals
        Company ABO.......................................        7.07
        Company Indemnified Parties.......................        9.01
        Company Representatives...........................        6.07
        Company Securities................................        3.05
        Company Subsidiary Securities.....................        3.06
        Company's Pension Plan............................        7.09
        Company's Trustee.................................        7.09
        DOJ...............................................        7.01
        End Date..........................................       10.01
        Facilities........................................        3.15
        Financing Agreements..............................        6.05
        Foreign Plan......................................        3.14
        FTC...............................................        7.01
        GAAP..............................................        3.07
        IAM Plan..........................................        7.09
        Indemnified Party.................................        9.02
        Indemnifying Party................................        9.02

                                      -10-
<PAGE>

        TERM                                                    SECTION

        IRS...............................................        3.13
        Parent............................................      Recitals
        Parent Indemnified  Party.........................        9.01
        Parent SEC Documents..............................        4.05
        Parent Stock Options..............................        2.04
        Parent's Savings Plans............................        7.09
        Parent's Trustee..................................        7.09
        Pay Down Amount...................................        6.04
        Purchase Price....................................        2.01
        Required Amount...................................        3.15
        Required Consent..................................        8.01
        Restricted Stock Awards...........................        2.04
        Subsidiary Drop Down..............................        6.02
        Tax...............................................        3.13
        Tax Return........................................        3.13
        Taxes.............................................        3.13
        Taxing Authority..................................        3.13
        Transactions......................................      Recitals
        Transferred Employee..............................        7.09
        TriMas............................................      Recitals
        Union Plan........................................        7.09

                                    ARTICLE 2

                              ISSUANCE AND PURCHASE

        SECTION 2.01. Issuance and Purchase. Upon the terms and subject to the
conditions of this Agreement, the Company agrees to issue free and clear of any
Lien and any other limitation or restriction (including any restriction on the
right to vote, sell or otherwise dispose of the Shares other than the
restrictions and limitations imposed by law and the Shareholders Agreement), and
Buyer agrees to purchase from the Company, the Shares on the Closing Date. The
purchase price for the Shares (the "PURCHASE PRICE") is $265 million in cash.
The Purchase Price shall be paid as provided in Section 2.02 hereof.

        SECTION 2.02. Closing. The closing (the "CLOSING") of the issuance and
purchase of the Shares hereunder shall take place at the offices of Cravath,
Swaine & Moore, 825 Eighth Avenue, New York, New York 10019 or such other place
as Parent, Buyer

                                      -11-
<PAGE>

and the Company may agree, as soon as possible, but in no event later than 10
Business Days after satisfaction of the conditions set forth in Article 8
hereof, or at such other time as Parent, Buyer and the Company may agree (the
"CLOSING DATE"). At the Closing:

             (a) Buyer shall deliver to the Company $265 million in immediately
        available funds by wire transfer to an account of the Company with a
        bank in New York City designated by the Company, by notice to Buyer,
        which notice shall be delivered not later than two Business Days prior
        to the Closing Date (or if not so designated, then by certified or
        official bank check payable in immediately available funds to the order
        of the Company in such amount); and

             (b) The Company shall deliver to Buyer certificates for the Shares
        duly endorsed or accompanied by stock powers duly endorsed in blank,
        with any required transfer stamps affixed thereto.

        SECTION 2.03. Closing Obligations. (a) At the Closing, Parent and the
Company shall deliver to Buyer:

             (i) the Officer's Certificates described in Section 8.02(a)(iii)
        hereof; and

             (ii) the Shareholders Agreement duly executed by Parent and the
        Company.

        (b) At the Closing, Buyer shall deliver to Parent or a designated
Subsidiary or Subsidiaries of Parent and the Company:

             (i) the Officer's Certificate described in Section 8.03(a)(iii)
        hereof; and

             (ii) the Shareholders Agreement duly executed by Buyer and all
        Persons to whom Buyer may assign the right to purchase Shares hereunder.

        SECTION 2.04. Treatment of Parent Options and Restricted Stock Awards
Held by Employees of the Company. (a) Options to purchase common stock of Parent
("PARENT STOCK OPTIONS") which have not vested prior to the Closing Date and
which are held by Transferred Employees shall terminate and be forfeited on the
Closing Date and new options to purchase Common Stock will be substituted
therefor. Subject to receipt of consent from each applicable holder of Parent
Stock Options, Parent Stock Options held by Transferred Employees or Former
Employees which vested on or prior to the Closing Date shall be assumed by the
Company and converted into options to purchase Common Stock, with appropriate
adjustments.

        (b) The Company shall promptly reimburse Parent upon its written demand
(accompanied by appropriate documentation) for (i) cash actually paid to
Transferred Em-

                                      -12-
<PAGE>

ployees by Parent in redemption, after the Closing Date, of restricted shares of
stock of Parent held by such Transferred Employees under Restricted Stock Awards
dated November 17, 2000 (the "RESTRICTED STOCK AWARDS"), and (ii) 42.01% of the
amount of cash actually paid to Corporate Employees by Parent in redemption,
after the Closing Date, of Restricted Stock Awards held by Corporate Employees.
Buyer and Parent undertake following the Closing Date to use reasonable efforts
to explore the legal issues, the associated costs and the overall feasibility of
substituting shares of Common Stock for Parent shares under the Restricted Stock
Awards held by Transferred Employees and Corporate Employees. Part II of
Schedule 1.01(c) sets forth the responsibilities of the Company for Transferred
Employees and of Parent for employees retained by Parent and its Subsidiaries
(other than the Company and the Company Subsidiaries) with respect to the
payment pursuant to Restricted Stock Awards under this Section 2.04(b). For
purposes of the continued vesting of Restricted Stock Awards, Parent will treat
employment with the Company and the Company Subsidiaries as employment of the
Transferred Employees with Parent.

                                    ARTICLE 3

                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

        The Company represents and warrants to Buyer that, except as set forth
in any disclosure schedule delivered by the Company to Buyer immediately prior
to execution of this Agreement:

        SECTION 3.01. Corporate Existence and Power. (a) The Company is a
corporation duly incorporated, validly existing and in good standing under the
laws of the State of Delaware and has all corporate powers and all governmental
licenses, authorizations, permits, consents and approvals required to carry on
its business as now conducted, except for those licenses, authorizations,
permits, consents and approvals the absence of which would not be reasonably
expected to have, individually or in the aggregate, a Material Adverse Effect.
The Company is duly qualified to do business as a foreign corporation and is in
good standing in each jurisdiction where such qualification is necessary, except
for those jurisdictions where failure to be so qualified would not be reasonably
expected to have, individually or in the aggregate, a Material Adverse Effect.

        (b) The Company has heretofore delivered to Buyer true and complete
copies of the certificate of incorporation and by-laws of the Company as
currently in effect.

        SECTION 3.02. Corporate Authorization. The execution, delivery and
performance by the Company of this Agreement and the consummation by the Company
of the Transactions are within the Company's corporate powers and have been duly
authorized

                                      -13-
<PAGE>

by all necessary corporate action on the part of the Company. This Agreement
constitutes a valid and binding agreement of the Company enforceable against the
Company in accordance with its terms except (i) to the extent enforceability may
be limited by bankruptcy laws, insolvency laws, reorganization laws, moratorium
laws or other laws affecting creditors rights generally and (ii) to the extent
enforceability may be limited by general equity principles.

        SECTION 3.03. Governmental Authorization. The execution, delivery and
performance by Company of this Agreement and the consummation by Company of the
Transactions require no action by or in respect of, or filing with, or
notification or reporting to, any Governmental Authority, other than (i)
compliance with any applicable requirements of the HSR Act and of the Antitrust
Laws of Germany, (ii) the filings, notices or reports identified on Schedule
3.03 and (iii) any actions or filings the absence of which would not be
reasonably expected to have, individually or in the aggregate, a Material
Adverse Effect.

        SECTION 3.04. Non-Contravention. The execution, delivery and performance
by the Company of this Agreement and the consummation of the Transactions do not
and will not (i) contravene, conflict with or result in any violation or breach
of any provision of the certificate of incorporation or by-laws of the Company
or any Company Subsidiary, (ii) contravene, conflict with or result in a
violation or breach of any provision of any applicable law, statute, ordinance,
rule, regulation, judgment, injunction, order or decree, (iii) require any
consent or other action by any Person under, constitute a default under or cause
or permit the termination, cancellation, acceleration or other change of any
right or obligation or the loss of any benefit to which the Company or any
Company Subsidiary is entitled under any provision of any agreement or other
instrument binding upon the Company or any Company Subsidiary or any license,
franchise, permit, certificate, approval or other similar authorization
affecting, or relating in any way to, the assets or business of the Company or
any Company Subsidiary or (iv) result in the creation or imposition of any Lien
on any asset of the Company or any Company Subsidiary, except for such
contraventions, conflicts and violations referred to in clause (ii) and except
for such failures to obtain any such consent or other action, defaults,
terminations, cancellations, accelerations, changes, losses or Liens referred to
in clauses (iii) and (iv) that would not reasonably be expected to have,
individually or in the aggregate, a Material Adverse Effect.

        SECTION 3.05. Capitalization. (a) The authorized capital stock of the
Company consists of 100,000,000 shares of Common Stock and 5,000,000 shares of
preferred stock, par value $1.00 per share. As of the date hereof, there are
outstanding 1,000 shares of Common Stock and no shares of preferred stock. As of
the Closing Date upon the issuance of the Shares pursuant to Section 2.01
hereof, (i) the authorized capital stock of the Company will consist of
400,000,000 shares of Common Stock and 100,000,000 shares of preferred stock,
par value $.01 per share, and (ii) there will be outstanding 20,000,000 shares
of Common Stock, including shares of Common Stock underlying the Warrant.

                                      -14-
<PAGE>

        (b) All outstanding shares of capital stock of the Company have been
duly authorized and validly issued and are fully paid and non-assessable. Except
as set forth in this Section 3.05, there are no outstanding (i) shares of
capital stock or voting securities of the Company, (ii) securities of the
Company convertible into or exchangeable for shares of capital stock or voting
securities of the Company or (iii) options or other rights to acquire from the
Company, or other obligation of the Company to issue, any capital stock, voting
securities or securities convertible into or exchangeable for capital stock or
voting securities of the Company (the items in clauses (i), (ii) and (iii) above
being referred to collectively as the "COMPANY SECURITIES"). There are no
outstanding obligations of the Company to repurchase, redeem or otherwise
acquire any Company Securities.

        SECTION 3.06. Company Subsidiaries. (a) Each Company Subsidiary is a
corporation, partnership or limited liability company, duly incorporated, formed
or organized, as the case may be, validly existing and in good standing under
the laws of its jurisdiction of incorporation, formation or organization, as the
case may be, and has all corporate or other similar powers and all governmental
licenses, authorizations, permits, consents and approvals required to carry on
its business as now conducted, except for those licenses, authorizations,
permits, consents and approvals the absence of which would not be reasonably
expected to have, individually or in the aggregate, a Material Adverse Effect.
Each such Company Subsidiary is duly qualified to do business as a foreign
corporation, partnership or limited liability company and is in good standing in
each jurisdiction where such qualification is necessary, except for those
jurisdictions where the failure to be so qualified would not be reasonably
expected to have, individually or in the aggregate, a Material Adverse Effect.

        (b) All of the outstanding capital stock of, or other voting securities
or ownership interests in, each Company Subsidiary are owned by the Company,
directly or indirectly, free and clear of any Lien (except for any Liens under
the Parent Credit Agreement) and free of any other limitation or restriction
(including any restriction on the right to vote, sell or otherwise dispose of
such capital stock or other voting securities or ownership interests other than
restrictions imposed by law or by the Shareholders Agreement). All of the
outstanding shares of capital stock of each Company Subsidiary have been validly
issued and are fully paid and non-assessable. There are no outstanding (i)
securities of any Company Subsidiary convertible into or exchangeable for shares
of capital stock or other voting securities or ownership interests in any
Company Subsidiary or (ii) options or other rights to acquire from any Company
Subsidiary, or other obligation of any Company Subsidiary to issue, any capital
stock or other voting securities or ownership interests in, or any securities
convertible into or exchangeable for any capital stock or other voting
securities or ownership interests in, any Company Subsidiary (the items in
clauses (i) and (ii) above being referred to collectively as the "COMPANY
SUBSIDIARY SECURITIES"). There are no outstanding obligations of the Company or
any Company Subsidiary to repurchase, redeem or otherwise acquire any of the
Company Subsidiary Securities.

                                      -15-
<PAGE>

        SECTION 3.07. Financial Statements. The audited consolidated financial
statements for the year ended December 31, 2001 and unaudited consolidated
interim financial statements for the three months ended March 31, 2002 of the
Company and the Company Subsidiaries heretofore delivered to Buyer fairly
present in all material respects, in conformity with United States generally
accepted accounting principles ("GAAP") applied on a consistent basis (except as
may be indicated in the notes thereto), the consolidated financial position of
the Company and the Company Subsidiaries as of the dates thereof and their
consolidated results of operations and cash flows for the periods then ended
(subject to normal year-end adjustments and the absence of notes in the case of
any unaudited interim financial statements).

        SECTION 3.08. Absence of Certain Changes. Since the Company Balance
Sheet Date, except in connection with this Agreement or the Transactions, the
business of the Company and the Company Subsidiaries has been conducted in the
ordinary course consistent with past practices and there has not been:

             (a) any creation or other incurrence by the Company or any Company
        Subsidiary of any Lien on any asset that is material to the Company and
        the Company Subsidiaries, taken as a whole, other than in the ordinary
        course of business consistent with past practices;

             (b) any damage, destruction or other casualty loss (whether or not
        covered by insurance) affecting the business or assets of the Company or
        any Company Subsidiary that has or could be reasonably expected to have,
        individually or in the aggregate, a Material Adverse Effect; or

             (c) any change in any method of financial accounting, method of tax
        accounting or financial accounting principles or practice by the Company
        or any Company Subsidiary, except for any such change required by reason
        of a concurrent change in GAAP, Regulation S-X under the 1934 Act, the
        Code or other applicable law or regulations.

        SECTION 3.09. No Undisclosed Material Liabilities. There are no
liabilities or obligations of the Company or any Company Subsidiary of the type
required to be disclosed or provided for on the Company Balance Sheet or the
notes thereto that have not been disclosed in the Company Balance Sheet or any
Parent SEC Documents.

        SECTION 3.10. Compliance with Laws and Court Orders. The Company and
each Company Subsidiary are, and since January 1, 2002 have been, in compliance
with any applicable law, statute, ordinance, rule, regulation, judgment,
injunction, order or decree, except for failures to comply or violations that
have not and would not be reasonably expected to have, individually or in the
aggregate, a Material Adverse Effect.

                                      -16-
<PAGE>

        SECTION 3.11. Litigation. There is no Action, suit, investigation or
proceeding pending against, or, to the knowledge of the Company, threatened
against, the Company or any Company Subsidiary or any of their respective
properties before any court or arbitrator, or before or by any Governmental
Authority, that would reasonably be expected to have, individually or in the
aggregate, together with all other such Actions, suits, investigations or
proceedings, a Material Adverse Effect except as disclosed in any Parent SEC
Document.

        SECTION 3.12. Finders' Fee. Except for an Affiliate of Buyer, whose fees
will be paid by the Company, there is no investment banker, broker, finder or
other intermediary that has been retained by or is authorized to act on behalf
of the Company or any Company Subsidiary that might be entitled to any fee or
commission from the Company or any of its Affiliates in connection with the
Transactions.

        SECTION 3.13. Taxes. (a) Each of the Company and the Company
Subsidiaries has timely filed (or has had timely filed on its behalf), taking
into account any extension of time within which to file, all material Tax
Returns required to be filed by it.

        (b) Each of the Company and the Company Subsidiaries has paid (or has
had paid on its behalf) all Taxes shown on such Tax Returns.

        "TAX" or "TAXES" shall mean any and all taxes, charges, fees, levies or
other assessments, including income, gross receipts, excise, real or personal
property, sales, withholding, social security, retirement, unemployment,
occupation, use, goods and services, service use, license, value added, capital,
net worth, payroll, profits, franchise, transfer and recording taxes, fees and
charges, and any other taxes, assessments or similar charges imposed by the
Internal Revenue Service (the "IRS") or any taxing authority (whether domestic
or foreign including any state, county, local or foreign government or any
subdivision or taxing agency thereof (including a United States possession)) (a
"TAXING AUTHORITY"), whether computed on a separate, consolidated, unitary,
combined or any other basis; and such term shall include any interest whether
paid or received, fines, penalties or additional amounts attributable to, or
imposed upon, or with respect to, any such taxes, charges, fees, levies or other
assessments. "TAX RETURN" shall mean any report, return, document, declaration
or other information or filing required to be supplied to any Taxing Authority
or jurisdiction (foreign or domestic) with respect to Taxes, including
information returns, any documents with respect to or accompanying payments of
estimated Taxes, or with respect to or accompanying requests for the extension
of time in which to file any such report, return, document, declaration or other
information.

        SECTION 3.14. Employee Benefit Plans. (a) Copies of all written Benefit
Plans and Foreign Plans, summary plan descriptions, trust agreements, actuarial
valuation

                                      -17-
<PAGE>

reports and the most recent annual return and IRS determination letters have
been made available to Buyer.

        (b) Except as would not be reasonably expected to have, individually or
in the aggregate, a Material Adverse Effect:

             (i) each Benefit Plan has at all times been maintained and
        administered in all respects in accordance with its terms and with the
        requirements of all applicable law, including ERISA and the Code. Each
        Benefit Plan intended to qualify under Section 401(a) of the Code has
        been determined by the IRS to be qualified under Section 401(a) of the
        Code, and the Company knows of no fact or circumstance giving rise to a
        material likelihood that the plan would not be treated as so qualified
        by the IRS;

             (ii) all required contributions to any Benefit Plans and
        Multiemployer Plans that are "defined benefit pension plans" required to
        be made by the Company or any Company Subsidiary in accordance with
        Section 302 of ERISA or Section 412 of the Code have been timely made;
        there has been no application for or waiver of the minimum funding
        standards imposed by Section 412 of the Code with respect to any Benefit
        Plan; and no Benefit Plan has incurred any "accumulated funding
        deficiency" within the meaning of Section 302 of ERISA or Section 412 of
        the Code;

             (iii) no "reportable event" (within the meaning of Section 4043 of
        ERISA) has occurred with respect to any Benefit Plan or any Plan
        maintained by an ERISA Affiliate since the effective date of said
        Section 4043;

             (iv) no liability has been incurred or is expected to be incurred
        by the Company or any Company Subsidiary under Title IV of ERISA with
        respect to any Benefit Plan or Multiemployer Plan, or with respect to
        any other Plan presently or heretofore maintained or contributed to
        during the 5 year period prior to the Closing Date by any ERISA
        Affiliate;

             (v) with respect to each Multiemployer Plan, (i) no withdrawal
        liability (within the meaning of Section 4201(b) of ERISA) has been
        incurred by the Company or any ERISA Affiliate, (ii) no such
        Multiemployer Plan is in "reorganization" (within the meaning of Section
        4241 of ERISA), (iii) no notice has been received that increased
        contributions may be required to avoid a reduction in plan benefits or
        the imposition of an excise tax, or that such Multiemployer Plan is or
        may become "insolvent" (within the meaning of Section 4241 of ERISA),
        (iv) to the knowledge of the Company or any Company Subsidiary, no
        proceedings have been instituted by the PBGC against such Multiemployer
        Plan and (v) neither the Company nor any Company Subsidiary has sold
        assets in a transaction intended to satisfy the requirements of Section
        4204 of ERISA;

                                      -18-
<PAGE>

             (vi) neither the Company nor any ERISA Affiliate has incurred any
        liability for any tax imposed under Sections 4971 through 4980E of the
        Code or civil liability under Section 502(i) or (l) of ERISA; and

             (vii) no action (excluding claims for benefits incurred in the
        ordinary course of Plan activities) has been brought or, to the
        knowledge of the Company, threatened against or with respect to any
        Benefit Plan or Foreign Plan.

        (c) Except as would not, individually or in the aggregate, be reasonably
expected to have a Material Adverse Effect, (i) all contributions required to be
made by the Company or any Company Subsidiary with respect to a Foreign Plan
have been timely made, (ii) each Foreign Plan has been maintained in substantial
compliance with its terms and with the requirements of any and all applicable
laws and has been maintained, where required, in good standing with the
applicable Governmental Authority, and (iii) neither the Company nor any Company
Subsidiary has incurred any obligation in connection with the termination of or
withdrawal from any Foreign Plan. For purposes hereof, the term "FOREIGN PLAN"
shall mean any plan, program, policy, arrangement or agreement maintained or
contributed to by, or entered into with the Company or any Company Subsidiary
with respect to employees (or former employees) employed outside the United
States.

        SECTION 3.15. Financing. (a) The Company has received and furnished
copies to Buyer and Parent of a commitment letter to provide financing (the
"FACILITIES") to the Company (including the Summary of Terms and Conditions
annexed thereto, the "COMMITMENT LETTER") with JP Morgan Chase Bank, CSFB Cayman
Islands Branch, Comerica Bank, National City Bank and Wachovia Bank, National
Association (the "BANK") dated as of May 14, 2002. The funds which the Bank has
agreed to provide, subject to the terms and conditions of the Commitment Letter,
will be sufficient, when taken together with other funds available to the
Company (assuming the sale by the Company of the Senior Subordinated Notes and
the issuance and purchase of the Shares pursuant to the terms of this
Agreement), to enable it to make payment of the Pay Down Amount and other
amounts owing as a result of the Transactions, as contemplated by the Commitment
Letter, and to pay all related fees and expenses (the proceeds of the sale of
the Senior Subordinated Notes and the funding provided for by the Facilities
being collectively referred to as the "REQUIRED AMOUNT").

        (b) As of the date hereof (i) the Commitment Letter has not been
withdrawn and is in full force and effect and (ii) the Company has no reason to
believe that any of the conditions set forth in the Commitment Letter will not
be satisfied.

                                      -19-
<PAGE>

        (c) Immediately after the consummation of the Transactions, the Company
(i) will not be insolvent, (ii) will not be left with unreasonably small
capital, and (iii) will not have debts beyond its ability to pay such debts as
they mature.

        SECTION 3.16. Disclaimer of Other Representations and Warranties. The
Company does not make, and has not made, any representations or warranties in
connection with the Transactions other than those expressly set forth herein. It
is understood that any data, any financial information or any memoranda or
offering materials or presentations are not and shall not be deemed to be or to
include representations or warranties of the Company. Except as expressly set
forth herein, no Person has been authorized by the Company to make any
representation or warranty relating to the Company or any Company Subsidiary or
their respective businesses or otherwise in connection with the Transactions
and, if made, such representation or warranty may not be relied upon as having
been authorized by the Company.

                                    ARTICLE 4

                    REPRESENTATIONS AND WARRANTIES OF PARENT

        Parent represents and warrants to Buyer that, except as set forth in any
disclosure schedule delivered by Parent to Buyer immediately prior to execution
of this Agreement:

        SECTION 4.01. Corporate Existence and Power. (a) Parent is a corporation
duly incorporated, validly existing and in good standing under the laws of the
State of Delaware and has all corporate powers and all governmental licenses,
authorizations, permits, consents and approvals required to carry on its
business as now conducted, except for those licenses, authorizations, permits,
consents and approvals the absence of which would not reasonably be expected to,
individually or in the aggregate, materially impair the ability of Parent to
consummate the Transactions.

        (b) Parent has heretofore delivered or made available to Buyer true and
complete copies of the certificate of incorporation and by-laws of Parent as
currently in effect.

        SECTION 4.02. Corporate Authorization. The execution, delivery and
performance by Parent of this Agreement and the consummation by Parent of the
Transactions and the actions by Parent contemplated thereby are within Parent's
corporate powers and have been duly authorized by all necessary corporate action
on the part of Parent. This Agreement constitutes a valid and binding agreement
of Parent enforceable against Parent in accordance with its terms, except (i) to
the extent enforceability may be limited by bankruptcy laws, insolvency laws,
reorganization laws, moratorium laws or other laws affecting creditors rights
generally and (ii) to the extent enforceability may be limited by general equity
principles.

                                      -20-
<PAGE>

        SECTION 4.03. Governmental Authorization. The execution, delivery and
performance by Parent of this Agreement and the consummation by Parent of the
Transactions and the actions by Parent contemplated thereby require no action by
or in respect of, or filing with, or notification or reporting to, any
Governmental Authority, other than (i) compliance with any applicable
requirements of the HSR Act and of the Antitrust Laws of Germany and (ii) any
actions or filings the absence of which would not reasonably be expected to,
individually or in the aggregate, materially impair the ability of Parent to
consummate the Transactions.

        SECTION 4.04. Non-Contravention. The execution, delivery and performance
by Parent of this Agreement and the consummation of the Transactions do not and
will not (i) contravene, conflict with or result in any violation or breach of
any provision of the certificate of incorporation or by-laws of Parent, (ii)
contravene, conflict with or result in a violation or breach of any provision of
any applicable law, statute, ordinance, rule, regulation, judgment, injunction,
order or decree, (iii) require any consent or other action by any Person under,
constitute a default under or cause or permit the termination, cancellation,
acceleration or other change of any right or obligation or the loss of any
benefit to which Parent or any of its Subsidiaries is entitled under any
provision of any agreement or other instrument binding upon Parent or any of its
Subsidiaries or any license, franchise, permit, certificate, approval or other
similar authorization affecting, or relating in any way to, the assets or
business of Parent or any of its Subsidiaries, (iv) result in the creation or
imposition of any Lien on any asset of Parent or any of its Subsidiaries, except
for such contraventions, conflicts and violations referred to in clause (ii) and
except for such failures to obtain any such consent or other action, defaults,
terminations, cancellations, accelerations, changes, losses or Liens referred to
in clauses (iii) and (iv) that would not reasonably be expected to, individually
or in the aggregate, materially impair the ability of Parent to consummate the
Transactions.

        SECTION 4.05. SEC Filings. (a) Parent has delivered to Buyer (i)
Parent's annual report on Form 10-K for its fiscal year ended December 31, 2001
and (ii) all of its other reports, statements, schedules and registration
statements filed with the SEC since December 31, 2001 (the documents referred to
in this Section 4.05(a), collectively, the "PARENT SEC DOCUMENTS").

        (b) As of its filing date, no Parent SEC Document contained any untrue
statement of a material fact or omitted to state any material fact necessary in
order to make the statements made therein with respect to the Company or any
Company Subsidiary, in the light of the circumstances under which they were
made, not misleading.

        SECTION 4.06. Preemptive Rights. Parent has taken all necessary action
required by Section 4.05 of the Parent Shareholders Agreement, including the
mailing of the Preemptive Rights Notice.

                                      -21-
<PAGE>

        SECTION 4.07. Disclaimer of Other Representations and Warranties. Parent
does not make, and has not made, any representations or warranties in connection
with the Transactions other than those expressly set forth herein. It is
understood that any data, any financial information or any memoranda or offering
materials or presentations given or made by or to the Company or Buyer or any of
their respective financing sources are not and shall not be deemed to be or to
include representations or warranties by or on behalf of or with respect to
Parent. Except as expressly set forth herein, no Person has been authorized by
Parent to make any representation or warranty relating to Parent or any of its
Subsidiaries including the Company or any Company Subsidiary or their respective
businesses or otherwise in connection with the Transactions and, if made, such
representation or warranty may not be relied upon as having been authorized by
Parent.

                                    ARTICLE 5

                     REPRESENTATIONS AND WARRANTIES OF BUYER

          Buyer represents and warrants to Parent and the Company that:

        SECTION 5.01. Partnership Existence and Power. Buyer is a limited
partnership duly formed, validly existing and in good standing under the laws of
the State of Delaware and has all partnership powers and all material
governmental licenses, authorizations, permits, consents and approvals required
to carry on its business as now conducted.

        SECTION 5.02. Partnership Authorization. The execution, delivery and
performance by Buyer of this Agreement and the consummation of the Transactions
are within the partnership powers of Buyer and have been duly authorized by all
necessary partnership action. This Agreement constitutes a valid and binding
agreement of Buyer enforceable against Buyer in accordance with its terms except
(i) to the extent enforceability may be limited by bankruptcy laws, insolvency
laws, reorganization laws, moratorium laws or other laws affecting creditors
rights generally and (ii) to the extent enforceability may be limited by general
equity principles.

        SECTION 5.03. Governmental Authorization. The execution, delivery and
performance by Buyer of this Agreement and the consummation by Buyer of the
Transactions require no action by or in respect of, or filing with, or
notification or reporting to, any Governmental Authority other than (i)
compliance with any applicable requirements of the HSR Act and of the Antitrust
Laws of Germany, and (ii) any actions or filings the absence of which would not
be reasonably expected to have, individually or in the aggregate, an effect
which is materially adverse to the ability of Buyer to consummate the
Transactions.

                                      -22-
<PAGE>

        SECTION 5.04. Non-Contravention. The execution, delivery and performance
by Buyer of this Agreement and the consummation by Buyer of the Transactions do
not and will not (i) contravene, conflict with or result in any violation or
breach of any provision of the certificate of incorporation or by-laws of Buyer,
(ii) assuming compliance with the matters referred to in Section 5.03 hereof,
contravene, conflict with or result in a violation or breach of any provision of
any law, rule, regulation, judgment, injunction, order or decree, (iii) require
any consent or other action by any Person under, constitute a default under or
cause or permit the termination, cancellation, acceleration or other change of
any right or obligation or the loss of any benefit to which Buyer is entitled
under any provision of any agreement or other instrument binding upon Buyer or
any license, franchise, permit, certificate, approval or other similar
authorization affecting, or relating in any way to, the assets or business of
Buyer or (iv) result in the creation or imposition of any Lien on any asset of
Buyer, except for such contraventions, conflicts and violations referred to in
clause (ii) and for such failures to obtain any such consent or other action,
defaults, terminations, cancellations, accelerations, changes, losses or Liens
referred to in clauses (iii) and (iv) that would not be reasonably expected to
materially impair the ability of Buyer to consummate the Transactions.

        SECTION 5.05. Fees. Except as otherwise provided in this Agreement and
except for fees due to Buyer from Parent pursuant to the Metaldyne Monitoring
Agreement between Buyer and Parent dated November 28, 2000, Buyer has not taken
any action that would cause Parent or the Company to be liable for any fee or
commission in connection with the Transactions.

        SECTION 5.06. Other Buyer Representations and Warranties. (a) The Shares
being acquired by Buyer hereunder are being acquired for Buyer's own account and
not with the view to, or for resale in connection with, any distribution.

        (b) Buyer acknowledges that it is an accredited investor within the
meaning of Rule 501 of Regulation D under the 1933 Act. Buyer has such
knowledge, skill and experience in business, financial and investment matters
that it is capable of evaluating the merits, risks and consequences of an
investment in the Shares and Buyer is able to bear the economic risk of loss of
this investment. Buyer has made such independent investigation of the Company
and the transactions contemplated by this Agreement as it deems necessary or
advisable in connection with its purchase of the Shares.

        (c) Buyer has been advised by the Company that: (A) neither the offer
nor sale of any Shares has been registered under the 1933 Act or any state or
foreign securities or "blue sky" laws; (B) the Shares are characterized as
"restricted securities" under the 1933 Act as they are being acquired from the
Company in a transaction not involving a public offering; and (C) any transfer
of the Shares will be subject to the provisions and the covenants of the
Shareholders Agreement.

                                      -23-
<PAGE>

                                    ARTICLE 6

                       COVENANTS OF PARENT AND THE COMPANY

        Parent and the Company agree that:

        SECTION 6.01. Amendment and Restatement of Articles of Incorporation and
By-laws. Prior to the Closing Date, Parent shall cause the Company to amend and
restate its Articles of Incorporation and By-laws to be in the form attached
hereto as Exhibits E and F, respectively.

        SECTION 6.02. Contribution of Capital Stock of Subsidiaries. As soon as
practicable after the date hereof, but in no case later than the date of pricing
of the Senior Subordinated Notes, the Company shall contribute all of the
capital stock of each of its direct Subsidiaries to TMS Holdings LLC in exchange
for or in respect of all of the issued and outstanding equity interests of TMS
Holdings LLC (the "SUBSIDIARY DROP DOWN").

        SECTION 6.03. Declaration and Payment of Dividend. Prior to the Closing
Date, the Company shall declare a dividend to Parent, payable to shareholders of
record as of the date prior to the Closing Date, of (i) cash equal to the
difference between $840 million and the Pay Down Amount and (ii) a Warrant to
purchase 750,000 shares of Common Stock, representing approximately 3.8% of the
fully diluted Common Stock of the Company immediately following the Closing.

        SECTION 6.04. Repayment of Debt. On the Closing Date, the Company shall,
and shall cause the Company Subsidiaries to, repay or satisfy all indebtedness
or obligations of the Company and the Company Subsidiaries under the Parent
Credit Agreement and the Parent Receivables Purchase Agreement and the Company
and the Company Subsidiaries shall repay all indebtedness owed to Parent and its
Subsidiaries (the total of such indebtedness repaid or satisfied, together with
accrued interest and premium, if any, being the "PAY DOWN AMOUNT").

        SECTION 6.05. Financing Arrangements. (a) The Company shall use its
commercially reasonable efforts to obtain financing in an amount at least equal
to the Required Amount, including by executing definitive agreements for the
Facilities and pursuing the issuance and sale of the Senior Subordinated Notes
on or prior to the Closing Date. The Commitment Letter and the definitive
agreements for the Facilities (along with any other document pursuant to which
the Company intends to obtain financing of all or a portion of the Required
Amount (including any documents relating to the issuance and sale by the Company
of the Senior Subordinated Notes)) are referred to herein collectively as the
"FINANCING AGREEMENTS."

                                      -24-
<PAGE>

        (b) Without limiting the generality of the foregoing, in the event that
at any time funds are not or have not been made available under the Financing
Agreements so as to enable the Company to proceed with the Closing in a timely
manner, the Company shall (i) use its commercially reasonable efforts to obtain
alternative funding in an amount at least equal to the Required Amount on terms
and conditions comparable to those provided in such Financing Agreements, in the
case of the Facilities, or otherwise on terms reasonably acceptable to the
Company, in the case of the issuance and sale of the Senior Subordinated Notes,
and (ii) shall continue to use its commercially reasonable efforts to take, or
cause to be taken, all actions and to do, or cause to be done, all things
necessary, proper or advisable under applicable laws and regulations to
consummate the Transactions contemplated by this Agreement.

        (c) Parent shall use its commercially reasonable efforts to cooperate
with the Company to obtain the financings referred to in Sections 6.05(a) and
(b) above, as applicable.

        SECTION 6.06. Conduct of the Company. Except as contemplated by this
Agreement or as expressly agreed to in writing by Buyer, during the period from
the date of this Agreement to the Closing Date, Parent shall cause the Company
and each Company Subsidiary to conduct its operations according to its ordinary
and usual course of business and consistent with past practice and use all
commercially reasonable efforts to preserve intact its current business
organizations, keep available the services of its current officers and employees
and preserve its relationships with customers, suppliers, licensors, licensees,
advertisers, distributors and others having business dealings with it and
preserve goodwill. Without limiting the generality of the foregoing, and except
as (x) otherwise expressly provided in this Agreement or (y) required by law,
prior to the Closing Date, Parent shall cause the Company and the Company
Subsidiaries not to, without the consent of Buyer:

             (a) expend funds for capital expenditures that in the aggregate
        would cause total capital expenditures for the period from January 1,
        2002 to the Closing Date to exceed 110% of the amounts set forth in the
        most recent version of the business plan previously provided to Buyer;

             (b) sell, lease, license or otherwise dispose of any Material
        Subsidiary or any material amount of assets, securities or property of
        the Company and the Company Subsidiaries, taken as a whole, except
        pursuant to existing contracts or commitments or otherwise in the
        ordinary course consistent with past practice, it being understood that
        title to the tangible personal property formerly used in the
        Commonwealth Business shall be retained by Parent or one of its
        Subsidiaries;

                                      -25-
<PAGE>

             (c) amend its certificate of incorporation, by-laws or equivalent
        organizational documents or alter through merger, liquidation,
        reorganization, restructuring or in any other fashion the corporate
        structure or ownership of any Material Subsidiary of the Company or
        split, combine or reclassify any of its capital stock or issue or
        authorize the issuance of any other securities in respect of, in lieu of
        or in substitution for shares of its capital stock;

             (d) authorize for issuance, issue, deliver, sell or agree or commit
        to issue, sell or deliver (whether through the issuance or granting of
        options, warrants, commitments, subscriptions, rights to purchase or
        otherwise), pledge (except as required by the Parent Credit Agreement)
        or otherwise encumber any shares of its capital stock or the capital
        stock of any of the Company Subsidiaries, any other voting securities or
        any securities convertible into, or any rights, warrants or options to
        acquire, any such shares, voting securities or convertible securities or
        any other securities or equity equivalents (including without limitation
        stock appreciation rights);

             (e) make or agree to make any acquisition of any equity interest
        (whether through a purchase of stock, establishment of a joint venture
        or otherwise) or assets which is material to the Company and the Company
        Subsidiaries, taken as a whole, except for: (i) purchases of inventory
        and supplies in the ordinary course of business or (ii) pursuant to
        purchase orders and other contracts entered into in the ordinary course
        of business;

             (f) settle or compromise any material litigation (whether or not
        commenced prior to the date of this Agreement) or settle, pay or
        compromise any material claims not required to be paid, other than, in
        each case, (i) relating to Taxes or (ii) in consultation and cooperation
        with Buyer and, with respect to any such settlement, with the prior
        written consent of Buyer;

             (g) (i) take any action that would make any representation and
        warranty of Parent and the Company hereunder inaccurate in any material
        respect at, or as of any time prior to, the Closing Date or (ii) omit to
        take any action necessary to prevent any such representation or warranty
        from being materially inaccurate in any respect at any such time; or

             (h) authorize, or commit or agree to take, any of the foregoing
        actions.

        SECTION 6.07. Access to Information. From the date of this Agreement
until the Closing Date, Parent shall cause the Company, the Company Subsidiaries
and each of their respective officers, directors, employees, counsel, advisors
and representatives (collectively, the "COMPANY REPRESENTATIVES") to give Buyer
and its members, managers, employees, counsel, advisors and representatives
(collectively, the "BUYER REPRESENTATIVES")

                                      -26-
<PAGE>

and representatives of financing sources identified by Buyer reasonable access,
upon reasonable notice and during normal business hours, to the offices and
other facilities and to the books and records of the Company and the Company
Subsidiaries and shall cause the Company Representatives and the Company
Subsidiaries to furnish Buyer and the Buyer Representatives and representatives
of financing sources identified by Buyer with such financial and operating data
and such other information with respect to the business and operations of the
Company and the Company Subsidiaries as Buyer and representatives of financing
sources identified by Buyer may from time to time reasonably request.

        SECTION 6.08. Reports. During the period from the date of this Agreement
to the Closing Date, Parent shall cause the Company to provide Buyer with
monthly financial statements of the Company and the Company Subsidiaries in the
existing reporting format (balance sheet, cash flow statement, income statement
and, if available, notes thereto), broken out by operating unit (except as to
the cash flow statement, which shall be a consolidated statement), no later than
the fifteenth Business Day following the end of each calendar month following
the date of this Agreement; provided that for calendar months that are also the
end of a calendar quarter, the Company may provide such financial information to
Buyer on the same date such information is publicly released in accordance with
the past practice of Parent.

        SECTION 6.09. Other Agreements. Prior to the Closing Date, the Company
shall deliver to the General Partner of Buyer duly executed copies of the
Monitoring Agreement and (ii) Parent and the Company shall execute and deliver
the Corporate Services Agreement.

        SECTION 6.10. Debt Repayment. Parent shall cooperate with the Company in
connection with the repayment of the Pay Down Amount and shall use commercially
reasonable efforts to obtain the release of the Company and the Company
Subsidiaries of their respective obligations under the Parent Credit Agreement
and under the Parent Receivables Purchase Agreement including the return to the
Company and Company Subsidiaries of the trade accounts receivable they
originated and sold pursuant to the Parent Receiveables Purchase Agreement
(whether such obligation is repaid or satisfied by the repurchase of such
receivables or otherwise).

        SECTION 6.11. Expenses; Indemnification. Except as otherwise provided in
this Agreement, if the Transactions are consummated, the Company shall reimburse
Buyer for all reasonable out-of-pocket expenses of Buyer incurred in conjunction
with the preparation, negotiation, documentation and closing of the
Transactions.

                                      -27-
<PAGE>

                                    ARTICLE 7

                   COVENANTS OF BUYER, PARENT AND THE COMPANY

        The parties hereto agree that:

        SECTION 7.01. Commercially Reasonable Efforts. (a) Subject to the terms
and conditions of this Agreement, Buyer, Parent and the Company will use all
commercially reasonable efforts to take, or cause to be taken, all necessary or
appropriate actions and to do, or cause to be done, all things necessary or
appropriate to satisfy the conditions to closing set forth in Article 8 hereof
and to consummate the Transactions on the terms and conditions set forth in this
Agreement including, without limitation, to use commercially reasonable efforts
to cooperate with the Company in pursuing the sale of the Senior Subordinated
Notes, obtaining funding under the Facilities, obtaining the Required Consent
and any other consents necessary to be obtained prior to and after the Closing
Date. Parent shall assist Buyer and the Company and cooperate with Buyer and the
Company, the Bank and the other lenders under the Facilities in order for Buyer
to establish its contemplated debt financing arrangements and obtain the
Required Amount thereunder. In furtherance and not in limitation of the
foregoing, Buyer agrees to make, if required, an appropriate filing of a
Notification and Report Form pursuant to the HSR Act with respect to the
Transactions as promptly as practicable and in any event within 15 Business Days
of the date hereof and to supply as promptly as practicable any additional
information and documentary material that may be requested pursuant to the HSR
Act and to take all other actions necessary to cause the expiration or
termination of the applicable waiting periods under the HSR Act as soon as
practicable.

        (b) In connection with the efforts referenced in Section 7.01(a) to
obtain all requisite approvals and authorizations for the Transactions under any
other Antitrust Law, each of Buyer, Parent and the Company shall use all
commercially reasonable efforts to (i) cooperate in all respects with each other
in connection with any filing or submission and in connection with any
investigation or other inquiry, including any proceeding initiated by a private
party, (ii) keep the other parties informed in all material respects of any
material communication received by such party from, or given by such party to,
the Federal Trade Commission (the "FTC"), the Antitrust Division of the
Department of Justice (the "DOJ") or any other Governmental Authority and of any
material communication received or given in connection with any proceeding by a
private party, in each case regarding any of the Transactions, and (iii) permit
the other parties to review any material communication given by it to, and
consult with each other in advance of any meeting or conference with, the FTC,
the DOJ or any such other Governmental Authority or, in connection with any
proceeding by a private party, with any other Person.

                                      -28-
<PAGE>

        SECTION 7.02. Certain Filings. Prior to and after the Closing Date,
Buyer, Parent and the Company shall use their commercially reasonable efforts to
cooperate with one another in (i) determining whether any action by or in
respect of, or filing with, any Governmental Authority is required, or any
actions, consents, approvals or waivers are required to be obtained from parties
to any material contracts, in connection with the consummation of the
Transactions, and (ii) taking such actions or making any such filings,
furnishing information required in connection therewith and seeking timely to
obtain any such actions, consents, approvals or waivers.

        SECTION 7.03. Public Announcements. Buyer, Parent and the Company shall
consult with each other before issuing any press release or making any public
statement with respect to this Agreement or the Transactions and shall not issue
any such press release or make any such public statement without the consent of
the other parties hereto.

        SECTION 7.04. Notices of Certain Events. Each of Buyer, Parent and the
Company shall promptly notify the others of:

             (a) any written notice or other written communication from any
        Person alleging that the consent of such Person is or may be required in
        connection with the Transactions;

             (b) any written notice or other written communication from any
        Governmental Authority in connection with the Transactions;

             (c) any Actions, suits, claims, investigations or proceedings
        commenced or, to its knowledge, threatened against, relating to or
        involving or otherwise affecting the Company or any of the Company
        Subsidiaries that, if pending on the date of this Agreement, would have
        been required to have been disclosed pursuant to Section 3.11 hereof, or
        that relate to the consummation of the Transactions;

             (d) the occurrence or non-occurrence of any fact or event which
        would be reasonably likely:

                  (i) to cause any representation or warranty contained in this
             Agreement to be untrue or inaccurate in any material respect at any
             time from the date hereof to the Closing Date, or

                  (ii) to cause any covenant, condition or agreement under this
             Agreement not to be complied with or satisfied; and

             (e) any failure of Buyer, Parent or the Company, as the case may
        be, to comply with or satisfy any covenant, condition or agreement to be
        complied with or

                                      -29-
<PAGE>

        satisfied by it hereunder; provided, however, that no such notification
        shall affect the representations or warranties of any party or the
        conditions to the obligations of any party hereunder.

        SECTION 7.05. Confidentiality. Prior to the Closing Date and after any
termination of this Agreement, each of Buyer, Parent and the Company will hold,
and will use all commercially reasonable efforts to cause its officers,
directors, employees, accountants, counsel, consultants, advisors and agents to
hold, in confidence all confidential documents and information concerning the
other party furnished to it or its Affiliates in connection with the
Transactions.

        SECTION 7.06. Intercompany Accounts. Except as provided in Section 6.04
and except for indebtedness owed by the Company and the Company Subsidiaries to
Parent or any of its Subsidiaries, all intercompany accounts between Parent or
its Subsidiaries, on the one hand, and the Company or any Company Subsidiary, on
the other hand, remaining unpaid as of the Closing Date shall be forgiven and
canceled (irrespective of the terms of payment of such intercompany accounts) in
a manner designed to minimize any tax consequences associated with such
forgiveness or cancellation. At least five Business Days prior to the Closing,
Parent shall prepare and deliver to the Company a statement setting out, in
reasonable detail, the calculation of all such intercompany account balances
based upon the latest available financial information as of such date and, to
the extent requested by the Company, provide the Company with reasonable
supporting documentation to verify the underlying intercompany charges and
transactions.

        SECTION 7.07. Intercompany Agreements; Guarantees. (a) All agreements
between Parent or its Subsidiaries, on the one hand, and the Company or any
Company Subsidiary, on the other hand, including but not limited to all
intercompany loans and the internal indemnities set forth on Schedule 7.07(a)
hereto (other than supply arrangements entered into in the ordinary course of
business, including without limitation, the contracts relating to the subject
matter listed under the heading "Internal Purchase Agreements" on Schedule
7.07(b) and other than those entered into in connection with the Transactions),
remaining in place as of the Closing Date shall be canceled or terminated on the
Closing Date.

        (b) With respect to any contract relating to the subject matter listed
under the heading "External Purchase Agreements" on Schedule 7.07(b), Parent and
the Company will use all commercially reasonable efforts in cooperation with
each other to (i) provide or cause to be provided to the Company the benefits of
such contract not materially inconsistent with the benefits received by the
Company or the Company Subsidiaries prior to the Closing, (ii) cooperate in any
arrangement that is reasonable and lawful as to Parent and the Company, designed
to provide such benefits to the Company or those entities specified by the
Company, (iii) investigate the feasibility of assigning to the Company or such
Company Subsidiary any

                                      -30-
<PAGE>

rights under such contracts with respect to goods or services previously
received by the Company or such Company Subsidiary and (iv) enforce for the
account of the Company or any Company Subsidiary any rights of Parent arising
from any contract, including the right to elect to terminate such contract in
accordance with the terms thereof at the request and sole expense of the
Company.

        (c) Except as otherwise provided in this Agreement, (i) prior to the
Closing Date, Parent and the Company shall use commercially reasonable efforts
to terminate (x) all Guarantees by Parent or any of its Subsidiaries of any
obligations of the Company and the Company Subsidiaries (including, but not
limited to, any Guarantees in connection with any sale-leaseback transactions)
and (y) all Guarantees by the Company and the Company Subsidiaries of any
obligations of Parent or any of its Subsidiaries, and arrange for the Company
(in the case of clause (x) above) or Parent (in the case of clause (y) above) to
assume the obligations of the Guaranteeing party under such Guarantees as soon
as possible after the Closing Date and (ii) after the Closing Date, Parent and
the Company shall continue to use commercially reasonable efforts to terminate
such Guarantees to the extent not terminated prior to the Closing Date. Schedule
7.07(c) sets forth all Guarantees by (A) Parent and its Subsidiaries of
obligations of the Company and the Company Subsidiaries and (B) the Company and
the Company Subsidiaries of obligations of Parent and its Subsidiaries.

        SECTION 7.08. Tax Matters.

        (a) Tax Returns. Parent shall file or cause to be filed when due all Tax
Returns that are required to be filed by or with respect to each consolidated,
combined or unitary group that includes the Company (or any Company Subsidiary)
and any Affiliate of Parent (other than the Company and the Company
Subsidiaries) for taxable years or periods beginning on or before the Closing
Date, and Parent shall pay (or cause to be paid) any Taxes due in respect of
such Tax Returns.

        (b) Tax Indemnification.

             (i) Parent Covered Taxes. Parent shall indemnify the Company and
        the Company Subsidiaries and hold them harmless from and against any
        Liability for: (A) income Taxes of the Company and the Company
        Subsidiaries for taxable periods beginning on or before the Closing Date
        payable with respect to any Tax Return for which the Company or any of
        the Company Subsidiaries was included as a member of a consolidated,
        combined or unitary group that includes Parent or any of its Affiliates
        (other than the Company or any of the Company Subsidiaries) (other than
        Taxes which are the Liability of the Company pursuant to Section
        7.08(b)(ii)(A) or (C)) and (B) income Taxes attributable to any member
        of the "affiliated group" (within the meaning of Section 1504(a) of the
        Code) of which Parent (or any predecessor or successor) is

                                      -31-
<PAGE>

        the common parent (other than Taxes related to income of the Company or
        any Company Subsidiary) that arise under the provisions of Treasury
        Regulation Section 1.1502-6(a). Parent shall pay to the Company amounts
        due to the Company under this Section 7.08(b)(i) within five Business
        Days before payment is required by law to be made by the Company or any
        of its Affiliates to the relevant Taxing Authority. The Company shall
        send to Parent written notice of the amount of each payment that Parent
        is required to make under the prior sentence at least 10 Business Days
        before Parent is required to make such payments.

             (ii) Company Covered Taxes. The Company shall indemnify Parent and
        its Affiliates and hold them harmless from and against any Liability
        for: (A) the Company Share of income Taxes of the Company and the
        Company Subsidiaries for any taxable period including the Closing Date
        payable with respect to any Tax Return (or extension thereof) for which
        the Company or any of the Company Subsidiaries was included as a member
        of a consolidated, combined or unitary group that includes Parent or any
        of its Affiliates (other than the Company or any of the Company
        Subsidiaries), (B) all Taxes of the Company and the Company Subsidiaries
        payable with any Tax Return (or extension thereof) other than any Tax
        Return for which the Company or any of the Company Subsidiaries was
        included as a member of a consolidated, combined or unitary group that
        includes Parent or any of its Affiliates (other than the Company or any
        of the Company Subsidiaries) and (C) any income Taxes of Parent or any
        of its Affiliates attributable to any income or gain resulting from any
        excess loss accounts relating to the Company or any of the Company
        Subsidiaries ceasing to be a member of a consolidated, combined or
        unitary group that includes Parent or any of its Affiliates (other than
        the Company or any of the Company Subsidiaries). The "COMPANY SHARE" of
        income Taxes shall be the product of any income Taxes payable by Parent
        or its Affiliates (other than income Taxes described in (C)) with
        respect to any Tax Return for which the Company or any of the Company
        Subsidiaries was included as a member of a consolidated, combined or
        unitary group that includes Parent or any of its Affiliates (other than
        the Company or any of the Company Subsidiaries) to the extent that such
        Taxes are paid with the filing of such Tax Return (or any extension
        thereof) or as a result of the application of any refund, overpayment or
        other amount payable to Parent or its Affiliates by the relevant Taxing
        Authority and a fraction, (x) the numerator of which shall be the
        product of the aggregate net taxable income (if positive) of the Company
        and any of the Company Subsidiaries for the periods for which they are
        included in such Tax Return multiplied by a fraction of which the
        numerator is the number of days after March 31, 2002 on which the
        Company or such Company Subsidiary is included in such group and the
        denominator is the total number of days of inclusion of the Company or
        such Company Subsidiary in such group in such taxable period, and (y)
        the denominator of which shall be the taxable income (if positive) of
        all members for the periods for which they are included in such Tax
        Return (determined with-

                                      -32-
<PAGE>

        out including any income or gain giving rise to the income Taxes
        described in (C)). The Company shall pay to Parent amounts due to Parent
        under clauses (A) and (C) of this Section 7.08(b)(ii) within five
        Business Days before payment is required by law to be made by Parent or
        any of its Affiliates to the relevant Taxing Authority. Parent shall
        send to the Company written notice of the amount of each payment that
        the Company is required to make under the prior sentence at least 10
        Business Days before the Company is required to make such payment.

             (iii) Allocable Taxes. To the extent that any income Taxes to which
        a Tax Return described in Section 7.08(a) relates are attributable to
        any income or gain resulting from any deferred intercompany transactions
        or pursuant to Treas. Reg. 1.1502-13 (and any predecessor, successor or
        similar provision) or any corresponding provision(s) of state law and to
        the Company or any of the Company Subsidiaries ceasing to be a member of
        a consolidated, combined or unitary group that includes Parent or any of
        its Affiliates (other than the Company or any of the Company
        Subsidiaries), the Chief Executive Officer of Parent shall determine
        whether those income Taxes shall be borne (i) by Parent, (ii) by the
        Company, or (iii) 57.99% by Parent and 42.01% by the Company, any such
        determination to be conclusively binding on Parent and the Company. The
        procedures for payment by one party to the other provided in this
        Section 7.08(b) shall govern the payments of amounts determined under
        this Section 7.08(b)(iii).

        (c) Refunds.

             (i) Except as provided in paragraph (ii), Parent shall be entitled
        to any Tax refund or credit received with respect to Taxes to which a
        Tax Return described in Section 7.08(a) relates for a taxable year or
        period beginning on or before the Closing Date, and to any other Tax
        refund or credit received with respect to Taxes for a taxable year or
        period beginning on or before the Closing Date to the extent that such
        Tax refund results from losses or credits carried back from a Tax Return
        described in Section 7.08(a) to a taxable year or period beginning on or
        before the Closing Date. The Company shall, and shall cause the Company
        Subsidiaries to, pay to Parent the amount of any Tax refunds or credits
        referred to in the prior sentence upon receipt of such Tax refunds or
        credits by any of the Company or the Company Subsidiaries. To the extent
        not otherwise paid to Parent, Parent shall be entitled to transfer from
        any account of the Company or any of the Company Subsidiaries managed or
        otherwise controlled by Parent the amount of any such refund or credit
        after receipt by the Company or any of the Company Subsidiaries of such
        refund or credit from the relevant Taxing Authority.

             (ii) The Company shall be entitled to any Tax refund or credit
        received with respect to Taxes to which a Tax Return described in
        Section 7.08(a) relates for a

                                      -33-
<PAGE>

        taxable year or period beginning on or before the Closing Date to the
        extent that such Tax refund results from losses or credits carried back
        from a Tax Return of the Company or any of the Company Subsidiaries for
        a taxable year or period beginning after the Closing Date.

             (iii) At the request of the other, Parent and the Company shall,
        and shall cause their respective Affiliates to, cooperate in the filing
        of any claim for refund or credit and in obtaining any refund or credit
        for any taxable period beginning on or before the Closing Date;
        provided, however, that the Company shall not, and shall cause the
        Company Subsidiaries not to, file any claim for such Tax refund or
        credit with respect to any taxable year or period beginning before the
        Closing Date without the prior written consent of Parent (which consent
        shall not be unreasonably withheld).

        (d) Assistance and Cooperation. After the Closing Date, each of Parent
and the Company shall, and shall cause their respective Affiliates to, provide
to the other party information and cooperation requested by the other party in
connection with (i) preparing any Tax Returns, and (ii) preparing for any audits
of, or disputes with any Taxing Authority regarding, any Tax Returns. Each of
Parent and the Company shall use reasonable efforts to minimize the amounts for
which the Company is liable under Section 7.08(b)(ii) and the amounts for which
Parent is liable under Section 7.08(b)(i).

        (e) Contests.

             (i) Notices. After the Closing Date, Parent and the Company each
        shall notify the other party in writing within 15 days of the
        commencement of any Tax audit or administrative or judicial proceeding,
        or any claim of any Taxing Authority, affecting Taxes for which the
        other party may be liable. Such notice shall include copies of any
        notice or other document received from any Taxing Authority in respect
        of any such asserted Tax liability.

             (ii) Control of Contests Involving Pre-Closing Periods. In the case
        of an audit or administrative or judicial proceeding involving any
        asserted liability for Taxes relating to any Tax Return described in
        Section 7.08(a), Parent shall have the right, at its expense, to control
        the conduct of such audit or proceeding, but shall consult with the
        Company with respect thereto.

        (f) Tax Sharing Agreements. As of the Closing Date, Parent shall cause
all Tax sharing, Tax allocation or Tax indemnity agreements between the Company
and any Company Subsidiary, on the one hand, and any Affiliate of Parent other
than the Company and the Company Subsidiaries, on the other hand, to be
terminated.

                                      -34-
<PAGE>

        (g) Closing of the Books. Except as otherwise specifically provided in
this Agreement, for purposes of determining the liability of Parent or the
Company pursuant to this Section 7.08, in the case of income Taxes that are
payable for a period (or portion thereof) that includes (but does not end on)
the Closing Date, the tax items shall be allocated between the portion ending on
the Closing Date and the portion beginning after the Closing Date on an interim
closing of the books method.

        (h) Overlap. To the extent that an indemnification obligation pursuant
to this Section 7.08 is duplicative of an indemnification obligation pursuant to
Article 9 of this Agreement, the provisions of this Section 7.08 shall govern
such indemnification, and indemnification shall not also be paid under Article 9
to such extent.

        SECTION 7.09. Plans.

        (a) Employment Status. The Company or one of the Company Subsidiaries
shall continue to employ all of the Employees who are actively employed by the
Company and the Company Subsidiaries on the Closing Date (each such employee
being hereafter referred to as a "TRANSFERRED EMPLOYEE"), it being agreed that
persons who are on layoff or leave and who have a right to return to work at the
Company or one of the Company Subsidiaries or who are on short-term (not more
than six months) medical disability (including pregnancy leave) who do not
thereafter become eligible for long-term medical disability or other authorized
leave (such as military, family or other leaves where return to work is subject
to statutory requirements) are to be considered Employees who are actively
employed, and it is also agreed that persons on long-term medical disability or
whose short-term medical disability thereafter becomes a long-term medical
disability and persons whose employment has terminated or will terminate prior
to the Closing Date without any right to return to work are not to be considered
Employees who are actively employed; provided, however, that the provisions of
this Section 7.09(a) shall not be construed to limit the ability of the Company
or the Company Subsidiaries to terminate any such Employee at any time for any
reason. For purposes of this Agreement the terms "layoff," "right to return to
work," "short-term disability," "long-term disability" and "pregnancy leave"
shall be construed in accordance with the personnel policies of the Company and
the Company Subsidiaries and the collective bargaining agreements covering
Employees, if applicable, both as in effect as of the date hereof.

        (b) Benefits and Compensation. The Company shall assume responsibility
for providing all Former Employees (including all Former Employees and Employees
who are on long-term disability as of the Closing Date) with all retiree medical
(including Medicare Part B), dental and life insurance coverage for which they
are or may become eligible under any retiree medical, dental or life insurance
program of Parent or any Subsidiary of Parent for Former Employees in effect as
of the date hereof. The Company shall assume responsibility for providing any
retiree medical (including Medicare Part B), dental and life insurance bene-

                                      -35-
<PAGE>

fits to the Employees, and the Company shall reimburse Parent for 42.01% of its
actual out-of-pocket cost attributable to retiree medical (including Medicare
Part B), dental and life insurance benefits for which the Corporate Employees
are or may become entitled after the Closing Date under any retiree medical,
dental or life insurance program of Parent or any Subsidiary of Parent as in
effect as of the date hereof.

        (c) Pension Plans.

             (i) Effective as of the Closing Date, except for Employees who
        participate in the MascoTech, Inc. Union Employees Pension Plan (the
        "UNION PLAN") or the IAM National Pension fund (the "IAM PLAN"), the
        Transferred Employees shall cease to participate in, or accrue any
        further benefits under, any tax-qualified defined benefit plan of Parent
        or its Subsidiaries; provided, however, that, to the extent permitted by
        applicable law, the benefits of the Transferred Employees under any
        tax-qualified defined benefit plan maintained by Parent or its
        Subsidiaries (other than the Union Plan) shall be increased by crediting
        the service and compensation of such Transferred Employees with Buyer
        and its Subsidiaries through December 31, 2002. Effective on the Closing
        Date, neither the Company nor any of the Company Subsidiaries shall have
        any responsibility for contributing to or under any tax-qualified
        defined benefit plan maintained by Parent or its Subsidiaries. Except as
        set forth below in the case of the Union Plan, all assets and
        liabilities of any tax-qualified defined benefit plan maintained by
        Parent or any of its Subsidiaries attributable to any Employee or Former
        Employee of the Company or any of the Company Subsidiaries shall be
        retained by Parent.

             (ii) The Company shall establish, as of the Closing Date, a
        tax-qualified defined benefit plan (the "COMPANY'S PENSION PLAN") for
        Employees and Former Employees participating in the Union Plan. Subject
        to the transfer of assets described in Section 7.09(c)(iii), the
        Company's Pension Plan shall assume the liabilities as of the Closing
        Date for the benefits of all Employees and Former Employees
        participating in the Union Plan.

             (iii) On a day which is within 60 days after the later of (i) the
        date upon which the Company delivers to Parent notice that the Company's
        actuaries, pursuant to Section 7.09(c)(v) hereof, have reviewed the
        calculations of Parent's actuaries and are satisfied that such
        calculations are in accordance with this Agreement (or have failed to do
        so within the 60 day period provided for in Section 7.09(c)(v)), or (ii)
        the day upon which the Company delivers to Parent a favorable IRS
        determination letter or an opinion of the Company's counsel, reasonably
        satisfactory to Parent's counsel, to the effect that the terms of the
        Company's Pension Plan and its related trust qualify, as to form, under
        Section 401(a) and Section 501(a) of the Code, Parent shall cause the
        trus-

                                      -36-
<PAGE>

        tee under the Union Plan ("PARENT'S TRUSTEE") to transfer to the trustee
        of the Company's Pension Plan (the "COMPANY'S TRUSTEE") cash assets or
        such other assets agreeable to the Company's Trustee and Parent's
        Trustee in an amount equal to the amount necessary to satisfy the
        applicable requirements of Sections 414(1) and 401(a)(12) of the Code,
        computed based on the actuarial assumptions set forth on Schedule
        7.09(c)(iii) hereof.

             (iv) The amount transferred pursuant to Section 7.09(c)(iii) shall
        be adjusted for investment earnings or losses of the trust in which the
        Union Plan assets are held for the period between the Closing Date and
        the actual date of transfer and reduced by the amount of any benefit
        payments actually paid from such plan to Employees and Former Employees
        during such period and a proportionate share of administrative expenses
        for such period if such administrative expenses are properly chargeable
        (and are actually charged) to the Union Plan. Parent shall estimate such
        earnings as of the actual date of transfer and then within 90 days of
        the actual date of transfer, Parent shall cause Parent's Trustee to
        remit to the Company's Trustee or the Company shall cause the Company's
        Trustee to remit to Parent's Trustee, as appropriate, an amount equal to
        the difference between the actual rate of earnings for such period and
        the estimated amount transferred as of the actual date of transfer (such
        difference to be adjusted for investment earnings at the State Street
        Bank short-term rate for the period between the actual date of transfer
        and the date such difference is paid to Parent or the Company).
        Notwithstanding anything in this Section 7.09(c) to the contrary,
        following the Closing Date and until the date of the respective
        transfers of assets to trusts under the Company's Pension Plan, Parent
        shall cause Parent's Trustee to continue to provide benefits to plan
        participants in accordance with the terms of the Union Plan to the
        extent that such benefits have accrued on or before the Closing Date. To
        the extent that benefits have accrued after the Closing Date, following
        the transfer of assets pursuant to Section 7.09(c)(iii), the Company
        shall pay such benefits to plan participants (retroactively, if
        applicable) in accordance with the terms of the Company's Pension Plan.

             (v) The assets caused to be transferred pursuant to Section
        7.09(c)(iii) shall be calculated by Parent's actuary, and shall be
        subject to review by the Company's actuary for the purpose of confirming
        that the calculation was made in accordance with (i) the actuarial
        assumptions and methods set forth in this Section 7.09(c) and (ii)
        generally accepted actuarial practice. As soon as practicable after the
        Closing Date, Parent shall provide the Company with a detailed summary
        of the calculations described in this Section 7.09(c) and any back-up
        data reasonably requested by the Company. If the Company or the
        Company's actuary do not notify Parent to the contrary within 60 days
        after the delivery to the Company of such detailed summary and data, the
        calculations of Parent's actuary pursuant to this Section 7.09(c) shall
        be

                                      -37-
<PAGE>

        deemed to be final, conclusive and binding on the parties. If, however,
        the Company notifies Parent in writing within such period that it and
        its actuary believe that the calculations were not prepared in
        accordance with the requirements of this Section 7.09(c) and such notice
        specifies (i) the precise items of the calculations challenged, (ii) the
        basis of the challenge and (iii) the amount of the adjustment they
        propose with respect to each such item, the parties will then attempt to
        resolve their differences with respect thereto. If the parties are
        unable to resolve their dispute within 30 days after the date the
        Company notifies Parent of the disputed items, the disputed items shall
        be referred to an international benefits consulting firm (the "ACTUARY
        FIRM") mutually acceptable to the Company and Parent. Parent and the
        Company shall request that the Actuary Firm resolve such disputes and
        report to Parent and the Company upon such remaining disputed items
        within 45 days after such referral. The decision of the Actuary Firm
        shall be final, conclusive and binding on the parties hereto. The fees
        and expenses of the Actuary Firm in conducting this assignment shall be
        borne equally by Parent and the Company.

        (d) Defined Contribution Plan.

             (i) As soon as practical after the Closing Date, Parent shall cause
        the trustee of Parent's defined contribution plans listed on Schedule
        7.09(d)(i) hereof ("PARENT'S SAVINGS PLANS") to transfer all of the
        assets and liabilities thereof attributable to Employees and Former
        Employees of the Company and the Company Subsidiaries to one or more
        defined contribution plans maintained by the Company. Unless otherwise
        agreed by Parent and the Company, the assets to be transferred shall be
        cash and promissory notes for loans made to Employees and Former
        Employees of the Company and the Company Subsidiaries under the terms of
        the Parent's Savings Plans.

             (ii) As of the Closing Date, the Company shall assume the
        stand-alone defined contribution plans listed on Schedule 7.09(d)(ii)
        and all liabilities, and shall receive all assets held, thereunder as of
        the Closing Date.

        (e) Collective Bargaining Agreements. Effective as of the Closing Date,
the Company or a Company Subsidiary shall assume the collective bargaining
agreements listed on Schedule 7.09(e), including any obligation to contribute to
the IAM Plan. The Company acknowledges that on the Closing Date, the Company or
such Company Subsidiary will become a successor employer under such collective
bargaining agreements and agree to assume all obligations of Parent and its
Subsidiaries under such agreements.

        (f) Severance and Other Liability.

             (i) Except as otherwise expressly set forth in this Section 7.09,
        the Company or one of the Company Subsidiaries shall assume, discharge,
        pay and be solely li-

                                      -38-
<PAGE>

        able for and shall indemnify and hold Parent and its Subsidiaries
        harmless from and against all Losses relating to any claim or liability
        arising out of the employment of the Employees and Former Employees
        (including any liability for severance benefits and supplemental
        executive retirement plans) which is payable on or after the Closing
        Date, including claims or liability under any Plan; provided, however,
        that the Company and the Company Subsidiaries shall not be liable for
        any claim arising from an event occurring prior to the Closing Date to
        the extent that it is covered by insurance (not including any amount
        reasonably allocable to self-insured retention) carried by Parent or a
        Subsidiary of Parent. The Company shall assume liability under the
        MascoTech, Inc. Key Employee Retention Plan and the MascoTech Retirement
        Benefit Restoration Plan for the Transferred Employees who participate
        in such plans, and the Company shall either assume the NI Industries,
        Inc. Supplemental Executive Retirement Plan for Key Employees and the
        Employment Agreements and Change of Control Agreements listed on
        Schedule 7.09(f)(i) hereto or enter into substitute agreements in
        replacement thereof. The Company shall reimburse Parent upon its written
        demand (accompanied by appropriate documentation) for 42.01% of its
        actual out-of-pocket costs paid on or after the Closing Date to
        Corporate Employees as severance benefits, supplemental executive
        retirement benefits and pursuant to the March 2001 Cash Grants, in each
        case as such benefits exist on the date hereof.

             (ii) The Company shall pay an amount to Parent equal to the excess
        of (A) the sum of (i) the excess of the "accumulated benefit obligation"
        of each of the MascoTech, Inc. Pension Plan and MascoTech, Inc. Master
        Hourly Employees Pension Plan attributable to Employees and Former
        Employees, over the amount of assets of each such plan attributable to
        Employees and Former Employees, all calculated as of the Closing Date,
        and (ii) the FAS 87 service cost resulting from Parent's agreement to
        credit additional service and compensation set forth in Section
        7.09(c)(i) hereof (determined using the actuarial assumptions and
        methods utilized by Parent in determining the service cost for such
        plans) over (B) $8,000,000. Such "accumulated benefit obligation" for
        each such plan shall be computed using a discount rate of 7.25%,
        compounded annually and the other actuarial assumptions and methods
        utilized by Parent in determining the "accumulated benefit obligation"
        of such plans for FAS 87 purposes as of the Closing Date. The amount of
        plan assets allocable to the Employees and Former Employees shall be
        determined by multiplying the actual fair market value of the assets of
        each plan on the Closing Date by a fraction, the numerator of which is
        the "accumulated benefit obligation" (determined as set forth above) of
        the applicable plan attributable to the Employees and Former Employees
        (the "COMPANY ABO"), and the denominator of which is the sum of the
        Company ABO and the "projected benefit obligation" (computed using a
        discount rate of 7.25%, compounded annually and the other actuarial
        assumptions and methods utilized by Parent in determining the "projected
        benefit obligation" of such plans for FAS 87 purposes as of the Closing

                                      -39-
<PAGE>

        Date) attributable to participants and former participants in the plan
        other than the Employees and Former Employees. The computations shall be
        made by Parent's actuary, and they shall be subject to review in
        accordance with the procedure set forth in Section 7.09(c)(v) above. An
        estimate of the amount payable under this Section 7.09(f)(ii) shall be
        paid as a dividend declared by the Company payable to shareholders of
        record as of the date prior to the Closing Date by the Company to Parent
        on the Closing Date. Following final agreement on the calculations
        described herein, Parent shall remit to the Company or the Company shall
        remit to Parent, as appropriate, an amount equal to the difference
        between the actual amount owed and the estimated amount transferred as
        of Closing Date (such difference to be adjusted for investment earnings
        at the State Street Bank short-term rate for the period between the
        Closing Date and the date such difference is paid to Parent or the
        Company).

             (iii) As of the Closing Date, the Company or one of the Company
        Subsidiaries shall assume the Foreign Plans listed on Schedule
        7.09(f)(iii) and all Liabilities thereunder, and shall receive all
        assets held thereunder, as of the Closing Date.

        (g) Worker's Compensation Claims. The Company shall assume liability for
all suits, claims, proceedings and actions pending as of or commenced after the
Closing Date resulting from actual or alleged harm or injury to Employees or
Former Employees regardless of when the incident or accident giving rise to such
liability occurred or occurs. The Company shall make all necessary arrangements
to assume all worker's compensation claim files, whether open or closed, as of
the Closing Date, and the Company shall make the necessary arrangements for
assuming the continued management of such liabilities.

                                    ARTICLE 8

                              CONDITIONS TO CLOSING

        SECTION 8.01. Conditions to Obligations of Each Party. The obligations
of Buyer, Parent and the Company to consummate the Transactions are subject to
the satisfaction of the following conditions:

             (a) any applicable waiting period under the HSR Act or any other
        Antitrust Laws relating to the Transactions shall have expired or been
        terminated;

             (b) no provision of any applicable law or regulation and no
        judgment, injunction, order or decree shall prohibit the consummation of
        the Closing;

                                      -40-
<PAGE>

             (c) no court, arbitrator or Governmental Authority shall have
        issued any order, and there shall not be any statute, rule or
        regulation, restraining or prohibiting the consummation of the Closing
        or the effective operation of any material portion of the business of
        the Company and the Company Subsidiaries after the Closing Date;

             (d) all actions by or in respect of, or filings with, any
        Governmental Authority required to permit the consummation of the
        Closing shall have been taken, made or obtained;

             (e) all licenses, permits, qualifications, consents, waivers,
        approvals, authorizations or orders shall have been obtained and made by
        Parent, except where the failure to receive such licenses, permits,
        qualifications, consents, waivers, approvals, authorizations or orders,
        individually or in the aggregate with all other such failures, would not
        be reasonably expected to have a Material Adverse Effect (either before
        or after giving effect to the Transactions); and

             (f) Parent shall have received the consent (the "REQUIRED CONSENT")
        of the Required Lenders (as defined in the Parent Credit Agreement)
        pursuant to Section 10.02 of the Parent Credit Agreement to the
        Transactions and the modifications to the Parent Credit Agreement
        summarized on Schedule 8.01 hereto.

        SECTION 8.02. Conditions to the Obligations of Buyer. The obligations of
Buyer to consummate the Closing are subject to the satisfaction of the following
further conditions:

             (a) (i) each of Parent and the Company shall have performed in all
        material respects all of its obligations hereunder required to be
        performed by it at or prior to the Closing Date, (ii) the
        representations and warranties of Parent and the Company contained in
        this Agreement and in any certificate or other writing delivered by
        Parent or the Company pursuant hereto that are qualified by materiality
        or Material Adverse Effect shall be true, and all other such
        representations and warranties of Parent or the Company shall be true in
        all material respects, in each case at and as of the Closing Date as if
        made at and as of the Closing Date (except to the extent that a
        representation or warranty expressly speaks as of a specified date or
        period of time) and (iii) Buyer shall have received a certificate signed
        by a duly authorized officer of Parent and the Company to the foregoing
        effect;

             (b) the Senior Subordinated Notes shall have been issued and sold
        by the Company on such terms and conditions as are reasonably acceptable
        to Buyer and the financing contemplated by the Commitment Letter to be
        provided by the Bank shall have been completed on substantially the
        terms and conditions identified in such Commitment Letter or on such
        other terms and conditions or involving such other fi-

                                      -41-
<PAGE>

        nancing sources as are reasonably acceptable to Buyer and are not more
        onerous to the Company; and

             (c) all actions shall have been taken, or consents obtained, with
        respect to sale-leasebacks of the Company's and the Company
        Subsidiaries' properties and other material contracts to which the
        Company or any Company Subsidiary is a party such that the Closing of
        the Transactions will not constitute a default under or cause or permit
        the termination, cancellation, acceleration or other change of any right
        or obligation or the loss of any benefit to which the Company or any
        Company Subsidiary is entitled under any provision of any agreement or
        other instrument binding upon the Company or any Company Subsidiary
        except for such failures to obtain any such consent or other action,
        defaults, terminations, cancellations, accelerations, changes or losses
        that would not be reasonably expected to have, individually or in the
        aggregate, a Material Adverse Effect.

        SECTION 8.03. Conditions to the Obligations of Parent. The obligations
of Parent to consummate the Closing are subject to the satisfaction of the
following further conditions:

             (a) (i) Buyer shall have performed in all material respects all of
        its obligations hereunder required to be performed by it at or prior to
        the Closing Date, (ii) the representations and warranties of Buyer
        contained in this Agreement and in any certificate or other writing
        delivered by Buyer pursuant hereto that are qualified by materiality
        shall be true, and all other such representations or warranties of Buyer
        shall be true in all material respects, in each case at and as of the
        Closing Date as if made at and as of the Closing Date (except to the
        extent that a representation or warranty expressly speaks as of a
        specified date or period of time) and (iii) Parent shall have received a
        certificate signed by a duly authorized officer of Buyer to the
        foregoing effect; and

             (b) the Board of Directors of Parent shall have received the
        Fairness Opinion.

                                      -42-
<PAGE>

                                    ARTICLE 9

                            OBLIGATIONS AFTER CLOSING

        SECTION 9.01. Indemnification.

        (a) Indemnification by Parent. Subject to the other provisions of this
Article 9, Parent shall indemnify Buyer, the Company, the Company Subsidiaries
and their directors, officers, managers, members, employees and agents
(collectively, the "COMPANY INDEMNIFIED PARTIES") from and against and shall
reimburse such Company Indemnified Parties in respect of any and all Losses
resulting from or arising out of (i) any Parent Liabilities (whether arising
prior to or after the Closing), (ii) the failure of Parent to perform any of its
obligations under this Agreement in any material respect, and (iii) all
Liabilities arising out of the business, operations and assets of Parent and
Parent's Subsidiaries after the Closing.

        (b) Indemnification by the Company. Except as otherwise provided in
Sections 7.08 and 7.09 and subject to the other provisions of this Article 9,
the Company shall indemnify Parent, its Subsidiaries and their present and
former directors, officers, managers, members, employees and agents
(collectively, the "PARENT INDEMNIFIED PARTIES") from and against and shall
reimburse such Parent Indemnified Parties in respect of any and all Losses
resulting from or arising out of (i) any of the Company Liabilities (whether
arising prior to or after the Closing), (ii) the failure of the Company to
perform any of its obligations under this Agreement in any material respect, and
(iii) all Liabilities arising out of the business, operations and assets of the
Company and any Company Subsidiary after the Closing.

        (c) Indemnification for Guarantees. If any Guarantee shall be in effect
after the Closing Date, the Company shall pay (in the case of clause (x) of
Section 7.07(c)) or Parent shall pay (in the case of clause (y) of Section
7.07(c)) all debt covered by such Guarantee as the same shall become due and
payable, and shall indemnify and hold harmless the Guaranteeing party thereunder
with respect to any payments made and Losses incurred by such Guaranteeing party
pursuant to any Guarantee, provided that such payments have been made in good
faith.

        SECTION 9.02. Treatment of Shared Contracts. With respect to any Shared
Contractual Liabilities pursuant to, under or relating to a given Shared
Contract, such Shared Contractual Liabilities shall be allocated between the
parties as follows: (i) first, if a Liability is incurred exclusively in respect
of a benefit received by Parent and any of its Subsidiaries (other than the
Company and the Company Subsidiaries) or by the Company or any Company
Subsidiary, the party receiving such benefit shall be responsible for such
Liability; and (ii) second, if a Liability cannot be so allocated under clause
(i), such Liability shall be allocated to the parties based on the relative
proportions of total benefit received (over the

                                      -43-
<PAGE>

term of the Shared Contract, measured as of the date of the allocation) under
the relevant Shared Contract. Notwithstanding the foregoing, each party shall be
responsible for any or all Liabilities arising out of or resulting from its
breach of the relevant Shared Contract.

        SECTION 9.03. Procedures. The party seeking indemnification under
Section 9.01 (the "INDEMNIFIED PARTY") agrees to give prompt notice to the party
against whom indemnity is sought (the "INDEMNIFYING PARTY") of the assertion of
any claim or the commencement of any suit, action or proceeding in respect of
which indemnity may be sought under such Section. The Indemnifying Party may at
the request of the Indemnified Party participate in and control the defense of
any such suit, action or proceeding at its own expense. The Indemnifying Party
shall not be liable under Section 9.01 for any settlement effected without its
consent of any claim, litigation or proceeding in respect of which indemnity may
be sought hereunder.

        SECTION 9.04. Limitations on Indemnification. (a) Except as otherwise
provided in Section 9.01(c), Parent shall have no obligation to indemnify any
Company Indemnified Party from and against any Losses until the aggregate Losses
suffered by all Company Indemnified Parties exceed $50,000, at which time Parent
shall be liable to the Company Indemnified Parties for the entire amount of all
aggregate Losses suffered by all Company Indemnified Parties. The foregoing
limitation shall not apply to any Losses suffered by the Company Indemnified
Parties with respect to Taxes.

        (b) Except as otherwise provided in Section 9.01(c), the Company shall
have no obligation to indemnify any Parent Indemnified Party from and against
any Losses until the aggregate Losses suffered by all Parent Indemnified Parties
exceed $50,000, at which time the Company shall be liable to the Parent
Indemnified Parties for the entire amount of all aggregate Losses suffered by
all Parent Indemnified Parties. The foregoing limitation shall not apply to any
Losses suffered by the Parent Indemnified Parties with respect to Taxes.

        (c) There shall be no time limit on claims under this Agreement.

        (d) The liability of Parent or the Company under this Article 9 shall be
reduced by an amount equal to (i) any net Tax Benefit realized by the
Indemnified Party (resulting from any Loss suffered by the Indemnified Party
that forms the basis of the Indemnifying Party's obligation hereunder), giving
effect to any Tax liabilities of the Indemnified Party arising as a result of
any payments made by an Indemnifying Party with respect to such claim for
indemnification; and (ii) the value of any insurance benefit realized by the
Indemnified Party in connection with any Loss suffered by such Person that forms
the basis of the Indemnifying Party's obligation hereunder. Each of the Company
and Parent shall use its commercially reasonable efforts to pursue any insurance
benefits covering any Loss suffered by any Indemnified Party that forms the
basis of such Indemni-

                                      -44-
<PAGE>

fied Party's claim against such Indemnifying Party.

        (e) Each party agrees that from and after the Closing, its sole remedy
with respect to any claims for money damages relating to the Transactions or the
subject matter of this Agreement shall be pursuant to the express
indemnification provisions set forth in this Agreement.

                                   ARTICLE 10

                                  TERMINATION

        SECTION 10.01. Termination. This Agreement may be terminated at any time
prior to the Closing:

        (a) by mutual written agreement of Buyer and Parent; or

        (b) by either Buyer or Parent, if:

             (i) the Closing has not been consummated on or before September 30,
        2002 (the "END DATE"), provided that the right to terminate this
        Agreement pursuant to this Section 10.01(b)(i) shall not be available to
        any party whose breach of any provision of this Agreement results in the
        failure of the Transactions to be consummated by such time;

             (ii) there shall be any law or regulation that makes consummation
        of the Transactions illegal or otherwise prohibited or any judgment,
        injunction, order or decree of any Governmental Authority having
        competent jurisdiction enjoining Buyer or Parent from consummating the
        Transactions is entered and such judgment, injunction, order or decree
        shall have become final and nonappealable; or

        (c) by Buyer, if a breach of or failure to perform any representation,
    warranty, covenant or agreement set forth in this Agreement shall
    have occurred that would cause the condition set forth in Section 8.02(a)
    hereof not to be satisfied, and such condition is incapable of being
    satisfied by the End Date; or

        (d) by Parent, if a breach of or failure to perform any representation,
    warranty, covenant or agreement on the part of Buyer set forth in this
    Agreement shall

                                      -45-
<PAGE>

    have occurred that would cause the condition set forth in Section 8.03(a)
    hereof not to be satisfied, and such condition is incapable of being
    satisfied by the End Date.

        The party desiring to terminate this Agreement pursuant to this Section
10.01 (other than pursuant to Section 10.01(a)) shall give notice of such
termination to the other parties.

        SECTION 10.02. Effect of Termination. If this Agreement is terminated
pursuant to Section 10.01 hereof, this Agreement shall become void and of no
effect without liability of any party (or any stockholder, member, manager,
director, officer, employee, agent, consultant or representative of such party)
to the other parties hereto. The provisions of Sections 7.05, 11.06 and 11.07
shall survive any termination hereof pursuant to Section 10.01.

                                   ARTICLE 11

                                  MISCELLANEOUS

        SECTION 11.01. Notices. All notices, requests and other communications
to any party hereunder shall be in writing (including facsimile transmission)
and shall be given,

                  if to Buyer, to:

                           Heartland Industrial Partners, L.P.
                           55 Railroad Avenue, 1st Floor
                           Greenwich, Connecticut  06830
                           Fax:  (203) 861-2622
                           Attn: David A. Stockman

                  if to Parent, to:

                           Metaldyne Corporation
                           47603 Halyard Drive
                           Plymouth, Michigan  48170
                           Fax:  (734) 207-6729
                           Attn: General Counsel

                                      -46-
<PAGE>

                  if to the Company:

                           TriMas Corporation
                           39400 North Woodward Avenue, Suite 130
                           Bloomfield Hills, Michigan  48304
                           Fax:  (248) 631-5455
                           Attn: Grant Beard

or such other address or facsimile number as such party may hereafter specify
for the purpose by notice to the other parties hereto. All such notices,
requests and other communications shall be deemed received on the date of
receipt by the recipient thereof if received prior to 5:00 p.m., and such day is
a Business Day in the place of receipt. Otherwise, any such notice, request or
communication shall be deemed not to have been received until the next
succeeding Business Day in the place of receipt.

        SECTION 11.02. Survival of Representations and Warranties. The
representations and warranties and agreements contained herein and in any
certificate or other writing delivered pursuant hereto shall not survive the
Closing Date of this Agreement, except for the agreements set forth in Sections
2.04, 7.05, 7.06, 7.07, 7.08, 7.09, Article 9 and Article 11.

        SECTION 11.03. Amendments; No Waivers. (a) Any provision of this
Agreement may be amended or waived prior to the Closing Date if, but only if,
such amendment or waiver is in writing and is signed, in the case of an
amendment, by each party to this Agreement or, in the case of a waiver, by each
party against whom the waiver is to be effective.

        (b) No failure or delay by any party in exercising any right, power or
privilege hereunder shall operate as a waiver thereof nor shall any single or
partial exercise thereof preclude any other or further exercise thereof or the
exercise of any other right, power or privilege. The rights and remedies herein
provided shall be cumulative and not exclusive of any rights or remedies
provided by law.

        SECTION 11.04. Expenses. Except as otherwise provided for in this
Agreement, all costs and expenses incurred in connection with this Agreement
shall be paid by the party incurring such cost or expense.

        SECTION 11.05. Successors and Assigns. The provisions of this Agreement
shall be binding upon and inure to the benefit of the parties hereto and their
respective successors and assigns, provided that no party may assign, delegate
or otherwise transfer any of its rights or obligations under this Agreement
without the consent of each other party hereto, except that Buyer may transfer
or assign, from time to time in whole or in part, to one or more Persons, the
right to purchase Shares hereunder, but any such transfer or assignment

                                      -47-
<PAGE>

will not relieve Buyer of its obligations hereunder and provided, further, that
Buyer shall be obligated to assign its right to purchase the Shares hereunder to
those Parent shareholders properly exercising their rights of preemption under
the Parent Shareholders Agreement. Any such assignee shall, by virtue of
purchasing Shares hereunder, be deemed to have made severally, with respect to
itself, the representations and warranties set forth in Article 5 hereof.

        SECTION 11.06. Governing Law. The validity, construction and effect of
this Agreement shall be governed by and construed and enforced in accordance
with the laws of the State of Delaware, without giving effect to the principles
of conflicts of law of such state.

        SECTION 11.07. WAIVER OF JURY TRIAL. EACH OF THE PARTIES HERETO HEREBY
IRREVOCABLY WAIVES ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING
ARISING OUT OF OR RELATED TO THIS AGREEMENT OR THE TRANSACTIONS.

        SECTION 11.08. Counterparts; Effectiveness. This Agreement may be signed
in any number of counterparts, each of which shall be an original, with the same
effect as if the signatures thereto and hereto were upon the same instrument.
This Agreement shall become effective when each party hereto shall have received
counterparts hereof signed by all of the other parties hereto. No provision of
this Agreement is intended to confer any rights, benefits, remedies, obligations
or liabilities hereunder upon any Person other than the parties hereto and their
respective successors and assigns.

        SECTION 11.09. Entire Agreement. This Agreement constitutes the entire
agreement between the parties with respect to the subject matter of this
Agreement and supersedes agreements and understandings, both oral and written,
between the parties with respect to the subject matter of this Agreement.
Exhibits referred to herein are incorporated by reference herein and shall
constitute a part of this Agreement.

        SECTION 11.10. Captions. The captions herein are included for
convenience of reference only and shall be ignored in the construction or
interpretation hereof.

        SECTION 11.11. Severability. If any term, provision, covenant or
restriction of this Agreement is held by a court of competent jurisdiction or
other authority to be invalid, void or unenforceable, the remainder of the
terms, provisions, covenants and restrictions of this Agreement shall remain in
full force and effect and shall in no way be affected, impaired or invalidated.
Upon such a determination, the parties shall negotiate in good faith to modify
this Agreement so as to effect the original intent of the parties as closely as
possible in an acceptable manner so that the Transactions be consummated as
originally contemplated to the fullest extent possible.

                                      -48-
<PAGE>

        IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed by their respective authorized officers as of the day and year
first above written.

                                            HEARTLAND INDUSTRIAL
                                            PARTNERS, L.P.

                                     By: Heartland Industrial Associates L.L.C.,
                                         its General Partner

                                     By: /s/ David A. Stockman
                                         -----------------------
                                         Name:  David A. Stockman
                                         Title: Managing Member

                                            TRIMAS CORPORATION

                                     By: /s/ Grant Beard
                                         -----------------
                                         Name:  Grant Beard
                                         Title: President

                                            METALDYNE CORPORATION

                                     By: /s/ Timothy D. Leuliette
                                         --------------------------
                                         Name:  Timothy D. Leuliette
                                         Title: Chairman & CEO

                                      -49-

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