Document:

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                                                                   Exhibit 10.41
                                                                   -------------

                            SHARE TRANSFER AGREEMENT

                                 March 30, 1999
                                 --------------

         The parties to this agreement are (i) MedSource Technologies, Inc., a
Delaware corporation (the "Company"), (ii) the stockholders of the Company named
on Schedule A to this agreement (collectively, the "Stockholders") and (iii) J.
H. Whitney III, L.P., a Delaware limited partnership ("J. H. Whitney"), and
Whitney Strategic Partners III, L.P., a Delaware limited partnership (together
with J. H. Whitney, the "Investors").

         The Stockholders own shares of the Company's common stock, par value
$.01 per share (the "Common Stock"). Simultaneously with the execution and
delivery of this agreement, the Company and the Investors are entering into a
securities purchase agreement (the "Securities Purchase Agreement") pursuant to
which, among other things, the Investors are purchasing from the Company an
aggregate of 300,000 shares (the "Investor Series B Shares") of the Company's 6%
series B cumulative convertible redeemable preferred stock, par value $.01 per
share (the "Series B Preferred Stock"), in the respective amounts set forth
opposite the name of each Investor on Schedule B to this agreement. The Investor
Series B Shares are convertible into shares of Common Stock.

         The term "Investor Common Shares" when used in this agreement shall
refer to the maximum number of shares of Common Stock that would be issuable
pursuant to the conversion of the 300,000 Investor Series B Shares, pursuant to
the Company's certificate of incorporation, as amended, including, without
limitation, the certificate of designation relating to the Series B Preferred
Stock (the "Certificate of Incorporation"), at the time of the consummation of a
Valuation Transaction (as defined in section 3(c) below) (regardless of whether
any or all such Investor Series B Shares are then outstanding).

         The Stockholders wish to provide the Investors with certain contingent
rights to the shares of Common Stock they are delivering to an escrow agent (the
"Escrow Agent") pursuant to the escrow agreement in the form attached as Exhibit
A to this agreement (the "Escrow Agreement").

         It is therefore agreed as follows:

         1.       Deposit of Shares; One-Year Test and Partial Disposition.

         (a)      Simultaneously with the execution of this agreement, each of
the Stockholders is delivering to the Escrow Agent a certificate or certificates
representing the number of shares of Common Stock set forth opposite that
Stockholder's name on Schedule A to this agreement (the "Stockholder Common
Shares"), together with duly

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executed, undated, blank stock transfer powers with respect thereto. The
Stockholder Common Shares, as adjusted pursuant to section 6 and including all
dividends, payments, earnings, proceeds and other distributions (collectively,
"Proceeds") with respect to such shares of Common Stock, are collectively
referred to as the "Escrow Shares." Notwithstanding any provision in this
agreement to the contrary, from and after the date hereof, no Stockholder shall
sell, transfer, assign or otherwise dispose of, or permit any Encumbrance (as
defined in section 7) to be placed upon, any of the Stockholder Common Shares or
Proceeds constituting the Escrow Shares other than any Encumbrances that may
exist under the terms of this agreement or the stockholders agreement being
entered into concurrently with this agreement by the Company, the Stockholders
and the Investors.

         (b)      If the Company's Adjusted EBITDA (as defined on Schedule C to
this agreement) for the four fiscal quarters of the Company ending March 31,
2000, as finally determined pursuant to section 1(c) below, is at least
$18,800,000, then any group of the Stockholders who deposited in the aggregate
at least 50% of the Escrow Shares (a "Stockholder Group") shall be entitled to
direct the Escrow Agent, by delivering to the Escrow Agent a written statement
in accordance with section 2(b) of the Escrow Agreement, to transfer and deliver
to the Stockholders, out of the initial 150,000 Escrow Shares being deposited
herewith, 50,000 shares of Company's Common Stock constituting such Escrow
Shares, together with all Proceeds with respect thereto.

         (c)      (i)      Prior to directing the Escrow Agent to deliver any
Escrow Shares pursuant to section 1(b), the Stockholder Group intending to take
such action shall give the Investors written notice of the amount such
Stockholders believe represents the Adjusted EBITDA for the period indicated in
section 1(b), together with the calculation thereof in reasonable detail
including the amount of each adjustment corresponding to a numbered adjustment
item on Exhibit C to this agreement. If, within the 20-business-day period after
receipt of the notice referred to above from the Stockholders, the Investors do
not give the Stockholders notice of their disagreement as contemplated in the
next sentence, then the Adjusted EBITDA as set forth in the notice form the
Stockholders shall be final, binding and conclusive on the parties. If the
Investors disagree with the Adjusted EBITDA amount set forth in the notice from
the Stockholders, or any of the calculations relating thereto, the Investors
may, within 20 business days after their receipt of the notice referred to above
from the Stockholders, give the Stockholders written notice of their
disagreement which notice shall include reasonable detail of the basis upon
which such disagreement exists. In the event of such a dispute, the Stockholders
and the Investors shall attempt to reconcile their differences within 20
business days after the receipt of the Investors' notice of disagreement. Any
resolution by the Stockholders and the Investors as to any disputed items shall
be final, binding and conclusive on such parties.

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                  (ii)     If the Stockholders and the Investors are unable to
reach a resolution with respect to all such disagreements within the
20-business-day period referred to in the penultimate sentence of section
1(c)(i), they shall promptly submit to Ernst & Young or another national
accounting firm of comparable size and stature selected by the Investors and
reasonably acceptable to the Stockholders (the "Accountants") the items, and
only those items, specified in the Investor's notice of disagreement that remain
in dispute. The Accountants shall be instructed to determine and report to the
Stockholders and the Investors upon such remaining disputed items within 20
business days after submission, which report shall be final, binding and
conclusive on the Stockholders and the Investors. The Accountants shall be
instructed to provide the Stockholders and the Investors with a report setting
forth the amounts (and calculations of such amounts in reasonable detail) of the
items in dispute that the Accountants believe to be reasonable based upon the
facts and circumstances as they understand them.

                  (iii)    The Escrow Shares (including the Proceeds, if any,
included therein) that are referred to in section 1(b) as eligible for release
if the Adjusted EBITDA amount referred to in such section is reached shall not
be released until the earliest to occur of (i) the date on which the Investors
and the Stockholders have reached agreement with respect to the Adjusted EBITDA,
(ii) the date on which the Adjusted EBITDA shall be final, binding and
conclusive pursuant to section 1(c)(i) by virtue of the fact that the Investors
did not deliver a timely notice of disagreement, and (iii) the date that is five
business days after the date on which the Accountants have rendered their report
as contemplated in section 1(c)(ii). The fees and disbursements of the
Accountants shall be borne equally by the Stockholders and the Investors.

         (d)      If the Company's Adjusted EBITDA for the four fiscal quarters
of the Company ending March 31, 2000 is less than $18,800,000, then no Escrow
Shares (including Proceeds) shall be released to the Stockholders pursuant to
this section 1 (but may be released pursuant to the other provisions of this
agreement).

         (e)      In connection with the determination of Adjusted EBITDA for
these purposes, the Investors shall not unreasonably withhold their consent to
any adjustment to Adjusted EBITDA proposed in good faith by the Stockholders
pursuant to item 10 of Schedule C to this agreement.

         2.       Contingent Transfer of Escrow Shares.

         (a)      (i)      If a Valuation Transaction (as defined in section 3)
results (prior to taking into consideration any Escrow Shares transferred
pursuant to the terms of this agreement) in the Investors achieving an internal
rate of return ("IRR") of less than 30%, then the Investors shall be entitled to
direct the Escrow Agent, by delivering to the Escrow Agent a written statement
in accordance with section 2(a) of the Escrow

                                        3

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Agreement, within (A) 15 days after the consummation of a Valuation Transaction
referred to in section 3(c)(vi) below and (B) 65 days after the consummation of
any other Valuation Transaction to transfer and deliver to (A) the Investors
Escrow Shares having an aggregate value (determined in accordance with section
2(a)(ii)) as of the Valuation Date (as defined in section 3) that, when combined
with the value of the Investor Common Shares (determined pursuant to section
3(b) below), would result in an IRR of 30% and (B) the Stockholders the
remaining Escrow Shares, if any. In no event shall the Investors be entitled
under this agreement or the Escrow Agreement to receive or share in any
distributions in respect of, or proceeds from, any shares owned by the
Stockholders other than the Escrow Shares.

                  (ii)     For purposes of section 2(a) the value of the Escrow
         Shares shall be, without duplication, the sum of:

                           (A)      the product of (X) the number of shares of
                  Common Stock included within the Escrow Shares multiplied by
                  (Y) the Net Proceeds Per Share (as hereinafter defined); and

                           (B)      the fair value of all Proceeds included
                  within the Escrow Shares.

         (b)      Subject to section 2(a), at any time after the earlier of (i)
the date that is the 16th day following the consummation of a Valuation
Transaction referred to in section 3(c)(vi) below and (ii) the date that is the
66th day following the consummation of any other Valuation Transaction, any
Stockholder Group shall be entitled to direct the Escrow Agent, by delivering to
the Escrow Agent a written statement in accordance with section 2(b) of the
Escrow Agreement, to transfer and deliver the remaining Escrow Shares to the
Stockholders.

         3.       Determination of IRR.

         (a)      For purposes of section 2, the Investors shall be deemed to
have an "IRR" equal to the rate of interest (accruing daily on the basis of a
360-day year for the actual number of days elapsed and compounding annually)
that would discount the value (determined in accordance with section 3(b)) of
the Investor Common Shares, as of the date of the Valuation Transaction (the
"Valuation Date"), to a present value, as of the date of this agreement, equal
to the $22,000,000 aggregate purchase price paid by the Investors for the
Investor Series B Shares pursuant to the Securities Purchase Agreement.

         (b)      For purposes of section 3(a), the value of the Investor Common
Shares shall be the sum of:

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                  (i)      the product of (X) the number of Investor Common
         Shares multiplied by (Y) the Net Proceeds Per Share; and, without
         duplication,

                  (ii)     the fair value of all Proceeds received prior to
         (and, without duplication of item (i) above, concurrently with) the
         date of determination in respect of the Investor Series B Shares and
         any shares of Common Stock issued upon conversion of the Investor
         Series B Shares thereof.

         (c)      "Valuation Transaction" means the earliest to occur of:

                  (i)      any sale, lease, transfer or other disposition,
         either directly or indirectly, of assets constituting all or
         substantially all of the assets of the Company and its subsidiaries
         taken as a whole in a single transaction or in any series of related
         transactions (any such transaction or series of transaction an "Asset
         Sale");

                  (ii)     any liquidation, dissolution or winding up of the
         Company, other than such an event deemed to have occurred as
         contemplated in item (iii) below (a "Liquidation");

                  (iii)    any liquidation, dissolution or winding up of the
         Company that shall have been deemed to occur only by virtue of the
         operation of section 2.A.7.C.(ii) of the Certificate of Designation
         relating to the Series B Preferred Stock other than any such event that
         is otherwise covered by any of items (i), (iv) or (v) of this section
         3(c) (a "Deemed Liquidation");

                  (iv)     any consolidation or merger of the Company with or
         into any other corporation or entity or other corporate reorganization
         with respect to which the stockholders of the Company immediately prior
         to such transaction own less than 50% of the voting power of the
         Company or other surviving entity or no longer have the ability to
         elect a majority of the Board of Directors of the Company or other
         surviving entity immediately after such transaction (any such
         transaction, a "Qualified Merger"); and

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                  (v)      any transaction or series of related transactions
         resulting in either (x) the transfer of more than 50% of the voting
         power of the Company if the persons or entities holding such voting
         power immediately prior to the transaction(s) do not collectively hold,
         immediately following the transaction(s), more than 50% of the voting
         power of the Company or other surviving entity, or (y) the transfer of
         the right to elect a majority of the Board of Directors of the Company
         or other surviving entity if the persons or entities collectively
         having such right immediately prior to the transaction(s), do not have,
         immediately following the transaction(s), the right to elect a majority
         of the Board of Directors of the Company or other surviving entity (any
         such transaction or series of related transactions, a "Qualified
         Transaction" and together with a "Qualified Merger, an "Acquisition");
         or

                  (vi)     a public offering of common stock of the Company that
         yields net proceeds (i.e., after underwriting discounts and
         commissions) (the "IPO Proceeds") to the Company of at least $40
         million (an "IPO");

provided, however, that, anything to the contrary contained above
notwithstanding, an Acquisition shall not be deemed to be a Valuation
Transaction unless one or more holders of shares of the Series B Preferred
Stock, or shares of Common Stock into which the Series B Preferred Stock are
converted, receive in the Acquisition in exchange for their shares consideration
other than securities in the Company or other surviving entity that are
reasonably equivalent to the Series B Preferred Stock or Common Stock, as
applicable, unless such transaction also constitutes a Deemed Liquidation.

         (d)      "Net Proceeds Per Share" means:

                  (i)      with respect to an Asset Sale, Liquidation or
         Acquisition, the Attributable Value with respect thereto divided by the
         number of shares of Fully Diluted Common Stock at the time of the Asset
         Sale or Liquidation, as the case may be; and

                  (ii)     with respect to a Deemed Liquidation, the
         Attributable Value in respect thereof; and

                  (iii)    with respect to an IPO, the Attributable Value in
         respect thereof.

         (e)      "Fully Diluted Common Stock" means the number of shares of
Common Stock then issued and outstanding plus the number of shares of Common
Stock issuable

                                        6

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upon the exercise, exchange or conversion of all securities exercisable or
exchangeable for or convertible into Common Stock (including, without
limitation, all classes and series of convertible preferred stock, if
applicable) at a price per share that is less than the amount per share
determined by dividing the Attributable Value on the date of the consummation of
the Valuation Transaction in question by the number of shares of Common Stock
then issued and outstanding.

         (f)      "Attributable Value" means:

                  (i)      in the case of an Asset Sale or an Acquisition, the
         aggregate proceeds (whether in cash, securities or other property)
         received or to be received by the holders of Common Stock pursuant to
         such transaction;

                  (ii)     in the case of a Liquidation, the aggregate amount
         distributable in respect of the Common Stock upon such Liquidation
         after paying all debts, liabilities, preferences and expenses of the
         Corporation, including, without limitation, deducting any reserves for
         contingent liabilities and expenses of the Liquidation itself; and

                  (iii)    in the case of a Deemed Liquidation, the amount
         received in connection therewith by the holders of shares of Series B
         Preferred Stock in respect of each such share;

                  (iv)     in the case of an IPO, the total IPO Proceeds per
         share of Common Stock received by the Company;

provided, however, that (A) Attributable Value for purposes of a Liquidation,
Asset Sale or Acquisition shall also include the consideration received by the
Company upon the exercise, exchange or conversion of those securities whose
exercise, exchange or conversion is included in Fully Diluted Common Stock, and
(B) if the Attributable Value comprises property other than cash, then the value
of such other property shall be determined as set forth in section 4.

                                        7

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         4.       Determination of Non-Cash Distributions. Except as expressly
provided in this agreement, the value of all non-cash amounts contemplated by
this agreement shall be determined by the reasonable good faith agreement of the
Company and a majority in interest of the Investors (the "Threshold Investors");
provided, however, that if the Company and the Threshold Investors are unable to
agree within 20 days after the Valuation Date, the parties shall select a
mutually agreeable investment banker to make the determination and, if they are
unable to agree on such an investment banker within 30 days after the Valuation
Date, then, at the initiation of any party to the dispute, such an investment
banker shall be appointed by the American Arbitration Association.

         5.       Proportional Delivery of Escrow Shares. The Escrow Agreement
shall provide that in each case where Escrow Shares are required to be delivered
pursuant to this agreement, such Escrow Shares shall be delivered (i) if to the
Investors, in the percentages set forth on Schedule A opposite each Investor's
respective name thereon, as such Schedule may be modified from time to time by
notice to the Stockholders and the Escrow Agent from the Threshold Investors,
and (ii) if to the Stockholders, in the percentages set forth on Schedule B
opposite each Stockholder's respective name thereon. In the event any delivery
of Escrow Shares shall include shares, cash and/or other assets (collectively
the "Assets"), each Investor and/or Stockholder entitled to such Escrow Shares
(the "Subject Shares"), shall receive Assets in all such categories, and the
proportion that each category of the Assets to be delivered to each such
Investor and/or Stockholder bears to all the Assets to be delivered to such
Investor and/or Stockholder shall equal the proportion that such category of
Assets to be delivered to each other Investor and/or Stockholder entitled to
receive Subject Shares bears to all the Assets to be delivered to such other
Investor and/or Stockholder.

         6.       Certain Provisions Relating to the Escrow Shares.

         (a)      The number of shares of capital stock included within the
Escrow Shares subject to this agreement shall be adjusted proportionately in the
event of any increase or decrease in the number of such shares of capital stock
resulting from a stock split, stock combination or the payment of a stock
dividend with respect to such shares or other similar event. Any additional
shares issued as contemplated by this provision shall be delivered to the Escrow
Agent to be held pursuant to the terms hereof and the Escrow Agreement as Escrow
Shares.

         (b)      All Proceeds, including without limitation any Proceeds
resulting from any Valuation Transaction or any Proceeds in respect of any other
Proceeds, in respect of the Stockholder Common Shares shall be assigned and paid
to the Escrow Agent to be held pursuant to terms hereof and the Escrow
Agreement.

         (c)      All of the shares held by the Escrow Agent shall bear, upon
the back thereof, the following legend (or a legend of similar effect):

                                        8

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         "THIS CERTIFICATE AND THE SECURITIES REPRESENTED HEREBY ARE SUBJECT TO
         POSSIBLE REQUIRED TRANSFER PURSUANT TO THE PROVISIONS OF A SHARE
         TRANSFER AGREEMENT DATED MARCH 30, 1999. A COPY OF THAT AGREEMENT, AS
         IT MAY BE AMENDED FROM TIME TO TIME, IS MAINTAINED WITH THE CORPORATE
         RECORDS OF THE COMPANY AND IS AVAILABLE FOR INSPECTION AT THE PRINCIPAL
         EXECUTIVE OFFICES OF THE COMPANY."

         7.       Representations. Each Stockholder represents and warrants
that:

                  (i)      he, she or it owns all right, title and interest in
         and to the Escrow Shares set forth opposite such Stockholder's name on
         Schedule A free and clear of all claims, liens, security interests,
         restrictions on transfer or other encumbrance of any kind
         (collectively, "Encumbrances") other than Encumbrances that may exist
         under the terms of this agreement or the stockholders agreement being
         entered into concurrently with this agreement by the Company, the
         Stockholders and the Investors;

                  (ii)     the Escrow Shares represent an aggregate of 150,000
         shares of Common Stock;

                  (iii)    all of the Escrow Shares are duly authorized, validly
         issued, fully paid and non-assessable and are free of preemptive
         rights; and

                  (iv)     The execution, delivery and performance of this
         agreement and the Escrow Agreement by such Stockholder will not
         violate, conflict with, or constitute a default (with or without notice
         or lapse of time or both) under any agreement, understanding or
         commitment to which such Stockholder is a party or by which such
         Stockholder's assets are bound, or violate any law, judgment, decree,
         order, regulation or rule of any court or governmental body applicable
         to such Stockholder.

The representations and warranties set forth in this section 7 shall survive the
execution and delivery of this agreement.

                                       9

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         8.       Specific Performance. The parties acknowledge that any damages
available at law for a breach of this agreement would not be an adequate remedy.
Therefore, the provisions of this agreement shall be fully enforceable in a
court of equity, or other tribunal having jurisdiction, by a decree of specific
performance, and appropriate injunctive relief may be applied for and granted in
connection therewith. Such remedies and all other remedies provided for in this
agreement shall, however, be cumulative and not exclusive and shall be in
addition to any other remedies that any party may have under this agreement or
otherwise.

         9.       Action Necessary to Effectuate the Agreement. Each of the
parties shall take or cause to be taken all such action as may be necessary to
effect the intent and purposes of this agreement.

         10.      Termination. This agreement shall terminate upon the
distribution of all of the Escrow Shares in accordance with the terms hereof and
the Escrow Agreement.

         11.      Miscellaneous.

         (a)      Notices. All notices, instructions and other communications in
connection with this agreement shall be in writing and shall be given by (and
effective when received by) (i) fax (with evidence of receipt) followed by
letter or other delivery, (ii) personal delivery or (iii) by a nationally
recognized overnight courier in each case to the parties at the address set
forth below (or at such other address as a party may specify in a notice to the
others):

         If to the Company:

                  MedSource Technologies, Inc.
                  Two Carlson Parkway
                  Plymouth, Minnesota 55447
                  Attention: Chief Executive Officer
                  Telecopier: (612) 249-2346

                                       10

<PAGE>

         With copies to:

                  Kidd & Company, LLC
                  Three Pickwick Plaza
                  Greenwich, Connecticut 06830
                  Attention: Richard J. Effress
                  Telecopier: (203) 661-1839

                  and

                  Edward R. Mandell
                  Parker Chapin Flattau & Klimpl, LLP
                  1211 Avenue of the Americas
                  New York, New York 10036-8735
                  Telecopier: (212) 704-6288

         If to any of the Investors or Stockholders, to the address of such
         Investor or Stockholder specified under their respective signatures at
         the end of this agreement.

         (b)      No Waiver. No course of dealing and no delay on the part of
any party hereto in exercising any right, power or remedy conferred by this
agreement shall operate as a waiver thereof or otherwise prejudice such party's
rights, powers and remedies conferred by this agreement or shall preclude any
other or further exercise thereof or the exercise of any other right, power and
remedy.

         (c)      Binding Effect. This agreement shall be binding upon and,
except as otherwise provided herein, shall inure to the benefit of the
respective parties and their permitted successors and assigns.

         (d)      Assignability. The rights of any Investor under this agreement
shall be assignable upon the express written direction of such Investor. Neither
this Agreement nor any interest herein may be assigned by any Stockholder
without the prior written consent of the Threshold Investors. Any purported
assignment in violation of this section 10(d) shall be void ab initio.

         (e)      Severability. Any provision of this agreement that is
prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction,
be ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction. To the extent permitted
by applicable law, the parties hereby waive any provision of law which renders
any provisions hereof prohibited or unenforceable in any respect.

                                       11

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         (f)      Modification. No term or provision of this agreement may be
amended, altered, modified, rescinded or terminated, except upon the express
written consent of the party against whom the same is sought to be enforced.

         (g)      Law Governing. This agreement shall be governed by and
construed in accordance with the law of the state of New York applicable to
agreements made and to be performed entirely in New York without regard to the
conflicts of law principles thereof.

         (h)      Headings. All headings and captions in this agreement are for
purposes of reference only and shall not be construed to limit or affect the
substance of this agreement.

         (i)      Entire Agreement, etc. This agreement and the Escrow Agreement
contain, and are intended as, a complete statement of all the terms of the
arrangements between the parties with respect to the matters provided for herein
and therein and supersede any previous agreements and understandings between the
parties with respect to those matters. If one or more of the provisions of this
agreement conflict with one or more of the provisions of the Escrow Agreement
the relevant provisions of this agreement shall govern.

                                       12

<PAGE>

                                       MEDSOURCE TECHNOLOGIES, INC.

                                       By: /s/ RICHARD J. EFFRESS
                                           -------------------------------
                                           Name: Richard J. Effress
                                           Title: Chairman

                [Stockholder and Investor Signature Pages Follow]

                                       13

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                                         Stockholder and Investor Signature Page
                                                     To Share Transfer Agreement

                                       /s/ WILLIAM J. KIDD
                                       --------------------------------
                                       William J. Kidd
                                       Address:
                                       51 Clapboard Ridge Road
                                       Greenwich, Connecticut 06830
                                       Telecopier: (203) 625-2632

                                       /s/ CARLA G. KIDD
                                       --------------------------------
                                       Carla G. Kidd
                                       Address:
                                       51 Clapboard Ridge Road
                                       Greenwich, Connecticut 06830
                                       Telecopier: (203) 625-2632

                                       /s/ EDWARD R. MANDELL
                                       --------------------------------
                                       Edward R. Mandell, as Trustee under
                                         the Catherine M. Kidd Trust
                                       Address:
                                       c/o Kidd & Company, LLC
                                       Three Pickwick Plaza
                                       Greenwich, Connecticut 06830
                                       Telecopier: (203) 661-1839

<PAGE>

                                         Stockholder and Investor Signature Page
                                                     To Share Transfer Agreement

                                       /s/ EDWARD R. MANDELL
                                       --------------------------------
                                       Edward R. Mandell, as Trustee under
                                         the Cara E. Kidd Trust
                                       Address:
                                       c/o Kidd & Company, LLC
                                       Three Pickwick Plaza
                                       Greenwich, Connecticut 06830
                                       Telecopier: (203) 661-1839

                                       /s/ EDWARD R. MANDELL
                                       --------------------------------
                                       Edward R. Mandell, as Trustee under
                                         the Thomas C. Kidd Trust
                                       Address:
                                       c/o Kidd & Company, LLC
                                       Three Pickwick Plaza
                                       Greenwich, Connecticut 06830
                                       Telecopier: (203) 661-1839

                                       /s/ CLARICE E. WEBB
                                       --------------------------------
                                       Clarice E. Webb
                                       Address:
                                       217 Bridge Street
                                       Stamford, Connecticut 06905
                                       Telecopier:

                                       /s/ JOHN P. NEAFSEY
                                       --------------------------------
                                       John P. Neafsey

<PAGE>

                                         Stockholder and Investor Signature Page
                                                     To Share Transfer Agreement

                                       Address:
                                       13 Valley Road
                                       Wilson Pt.
                                       South Norwich, Connecticut 06854
                                       Telecopier: (203) 831-8455

                                       /s/ RICHARD J. EFFRESS
                                       --------------------------------
                                       Richard J. Effress
                                       Address:
                                       c/o Kidd & Company, LLC
                                       Three Pickwick Plaza
                                       Greenwich, Connecticut 06830
                                       Telecopier: (203) 661-1839

                                       /s/ ANDREW D. LIPMAN
                                       --------------------------------
                                       Andrew D. Lipman
                                       Address:
                                       c/o Kidd & Company, LLC
                                       Three Pickwick Plaza
                                       Greenwich, Connecticut 06830
                                       Telecopier: (203) 661-1839

<PAGE>

                                         Stockholder and Investor Signature Page
                                                     To Share Transfer Agreement

                                       /s/ ADAM D. LEHRHOFF
                                       --------------------------------
                                       Adam D. Lehrhoff
                                       Address:
                                       c/o Kidd & Company, LLC
                                       Three Pickwick Plaza
                                       Greenwich, Connecticut 06830
                                       Telecopier: (203) 661-1839

                                       /s/ JOHN C. HERTIG
                                       --------------------------------
                                       John C. Hertig
                                       Address:
                                       124 Lamberts Lane
                                       Cohasset, Massachusetts 02025
                                       Telecopier: (781) 682-0308

                                       /s/ WILLIAM ALTIERI
                                       --------------------------------
                                       William Altieri
                                       Address:
                                       c/o Thayer Advisory Group
                                       115 Broad Street
                                       Boston, Massachusetts 02110
                                       Telecopier: (617) 350-5595

<PAGE>

                                         Stockholder and Investor Signature Page
                                                     To Share Transfer Agreement

                                       J. H. WHITNEY III, L.P.

                                       By: J. H. Whitney Equity Partners III,
                                           LLC, its General Partner

                                       By: /s/
                                           ------------------------------
                                           Name:
                                           Title: A Managing Member

                                       Address:
                                       177 Broad Street
                                       Stamford, Connecticut 06901
                                       Attention: Mr. Michael R. Stone
                                                  Mr. Daniel J. O'Brien
                                       Telecopier: (203) 973-1422

                                       With a copy to

                                       Morrison Cohen Singer & Weinstein, LLP
                                       750 Lexington Avenue
                                       New York, New York 10022
                                       Attention: David A. Scherl, Esq.
                                       Telecopier: (212) 735-8708

                                       WHITNEY STRATEGIC PARTNERS III, L.P.

                                       By: J. H. Whitney Equity Partners III,
                                           LLC, its General Partner

                                       By: /s/
                                           ------------------------------
                                           Name:
                                           Title: A Managing Member

                                       Address:
                                       177 Broad Street
                                       Stamford, Connecticut 06901
                                       Attention: Mr. Michael R. Stone

<PAGE>

                                         Stockholder and Investor Signature Page
                                                     To Share Transfer Agreement

                                                  Mr. Daniel J. O'Brien
                                       Telecopier: (203) 973-1422

                                       With a copy to

                                       Morrison Cohen Singer & Weinstein, LLP
                                       750 Lexington Avenue
                                       New York, New York 10022
                                       Attention: David A. Scherl, Esq.
                                       Telecopier: (212) 735-8708

<PAGE>

                                                                      SCHEDULE A
                                                     To Share Transfer Agreement

<TABLE>
<CAPTION>
                     List of Stockholders and Escrow Shares

Name of Stockholder                          Number of Escrow Shares      Percentage
-------------------                          -----------------------      ----------

<S>                                                  <C>                   <C>
William J. Kidd                                       30,380                20.253%
Carla G. Kidd                                         30,380                20.252%
Edward R. Mandell, as Trustee under the
  Catherine M. Kidd Trust                             10,126                 6.751%
Edward R. Mandell, as Trustee under the
  Cara E. Kidd Trust                                  10,126                 6.751%
Edward R. Mandell, as Trustee under the
  Thomas C. Kidd Trust                                10,126                 6.751%
Clarice Webb                                           1,350                 0.900%
John P. Neafsey                                        1,350                 0.900%
Richard J. Effress                                    16,877                11.252%
Andrew D. Lipman                                      16,877                11.252%
Adam D. Lehrhoff                                       7,425                 4.950%
John C. Hertig                                        12,000                 8.000%
William Altieri                                        2,983                 1.988%
                                                     -------               -------

         Total Escrow Shares                         150,000               100.000%
                                                     =======               =======
</TABLE>

<PAGE>

                                                                      SCHEDULE B
                                                     To Share Transfer Agreement

<TABLE>
<CAPTION>
            List of Investors and Shares of Series B Preferred Stock

Name of Stockholder                    Number of Shares   Purchase Price   Percentage
-------------------                    ----------------   --------------   ----------

<S>                                       <C>              <C>               <C>
J. H. Whitney III L.P.                    292,941.18       $ 21,481,376       97.64%
Whitney Strategic Partners III, L.P.        7,058.82            518,624        2.36

         Total                            300,000.00       $ 22,000,000      100.00%
</TABLE>

                                       21

<PAGE>

                                                                      SCHEDULE C

                                 Adjusted EBITDA

     "Adjusted EBITDA" shall mean Consolidated EBITDA (as defined in the Credit
Agreement (the "Original Senior Credit Agreement"), dated as of March 30, 1999
and as in effect as of such date, without regard to any amendment, supplement or
other modification thereto, among the Company, MedSource Technologies, LLC,
Various Banks, and Deutsche Bank AG, New York Branch, as Administrative Agent)
of the Company for the four consecutive fiscal quarters ending March 31, 2000,
other than any amount of Consolidated EBITDA generated by Non-Platform Companies
(as defined in the Original Senior Credit Agreement) (the "Core EBITDA"), plus
the following items in each case to the extent that such item has been deducted
in connection with the determination of Core EBITDA for such period; and
provided, that any expense that is included in more than one of the items
described below shall be added back only once in the calculation of Adjusted
EBITDA for these purposes:

          1.   Expenses relating to the cash out of certain life insurance
     policies owned by the Company or its subsidiaries to the extent such
     expenses relate to the Company or any of the companies identified on
     Exhibit A-1 (such companies, the "Base Roll-up Acquisitions");

          2.   Expenses relating to extraordinary cash or stock bonuses paid by
     the Company or its subsidiaries (but excluding any cash or stock bonuses
     paid in the ordinary course of business) to the extent such expenses are
     related to the Base Roll-up Acquisitions;

          3.   Expenses relating to the payout of deferred compensation plans
     (but excluding any payout of deferred compensation plans paid in the
     ordinary course of business) to the extent such expenses are related to the
     Base Roll-up Acquisitions;

          4.   Expenses relating to the move of the Portlyn business to an
     alternative facility/premises;

          5.   Expenses relating to the build-out of a technology center in
     Minneapolis, MN;

          6.   Expenses relating to the write-up of inventory acquired in
     connection with the Base Roll-up Acquisitions;

          7.   Expenses relating to the establishment of reasonable accounts
     receivable and inventory reserves for the Company and its subsidiaries
     established in connection with the Base Roll-up Acquisitions;

<PAGE>

          8.   Expenses relating to employee severance costs to the extent such
     expenses are related to the Base Roll-up Acquisitions;

          9.   Expenses relating to the formation and structuring of the Company
     and the Base Roll-up Acquisitions;

          10.  Expenses relating to other one-time extraordinary expenses of the
     Company or the Base Roll-up Acquisitions, and which have been consented to
     in writing by Whitney Mezzanine Management Company, L.L.C.

          11.  Direct out-of-pocket third party expenses (it being understood
     that neither the Stockholders and their affiliates nor the Investors and
     their affiliates shall be considered "third parties" for this purpose)
     relating to the negotiation, structuring and consummation of Permitted
     Acquisitions; and

          12.  Expenses relating to the recruitment and moving costs incurred in
     connection with the hiring of officers or division managers of the Company
     or any of the Base Roll-up Acquisitions.

                                       23

<PAGE>

                                                                     EXHIBIT C-1

                      Additional Information Needed in the
                         Calculation of Adjusted EBITDA

Companies Constituting the Base
  Roll-up Acquisitions:

         (1)      Brimfield Precision, Inc., a Massachusetts corporation

         (2)      Kelco Industries, Inc., a Minnesota corporation

         (3)      W. N. Rushwood, Inc., a New York corporation d/b/a Hayden
                  Precision Industries

         (4)      National Wire and Stamping, Inc., a Colorado corporation

         (5)      Portlyn Corporation, a New Hampshire corporation

         (6)      Texcel, Inc., a Massachusetts corporation

         (7)      The MicroSpring Co., Inc., a Massachusetts corporation

                                       24

<PAGE>

                               KIDD & COMPANY, LLC
                              Three Pickwick Plaza
                          Greenwich, Connecticut 06930

                                       July      , 2000

J.H. Whitney III, L.P.
Whitney Strategic Partners III, L.P.
177 Broad Street
Stamford, Connecticut  06901
Attention: Michael J. Stone and Daniel J. O'Brien

MedSource Technologies, Inc.
110 Cheshire Lane
Minneapolis, Minnesota 55305

Gentlemen:

         As you know, MedSource Technologies, Inc. effected a 10-for-1 stock
split in January 2000 and as a result, the 150,000 "Escrow Shares" referred to
in the Share Transfer Agreement dated March 30, 1999 among MedSource, the
Stockholders and the Investors named therein now represent 1,500,000 shares of
MedSource's Common Stock.

         The undersigned, the holders of at least 50% of the Escrow Shares
deposited, for good and valid consideration the receipt and sufficiency of which
is hereby acknowledged, release any claim any or all of them may have arising
out of, relating to or in connection with any rights they may have to the
release of 500,000 post-split Escrow Shares in accordance with Section 1 of the
Share Transfer Agreement, with the understanding and agreement that all
1,500,000 post-split Escrow Shares will now be subject to transfer and delivery
to the Stockholders in accordance with Section 2 of the Share Transfer
Agreement.

         Additionally, as you know, the Escrow Fund (as defined in the Kidd
Closing Fee Escrow Agreement dated March 30, 1999 among MedSource, Kidd &
Company, LLC and Parker Chapin Flattau & Klimpl, LLP) is being released to Kidd
& Company.

                                       Very truly yours,

                                       /s/ WILLIAM J. KIDD
                                       ------------------------------
                                       William J. Kidd

                                       /s/ CARLA G. KIDD
                                       ------------------------------
                                       Carla G. Kidd

                                        1

<PAGE>

                                       /s/ EDWARD R. MANDELL
                                       ------------------------------
                                       Edward R. Mandell, as trustee
                                       of the Catherine M. Kidd Trust

                                       /s/ EDWARD R. MANDELL
                                       ------------------------------
                                       Edward R. Mandell, as trustee
                                       of the Cara E. Kidd Trust

                                       /s/ EDWARD R. MANDELL
                                       ------------------------------
                                       Edward R. Mandell, as trustee
                                       of the Thomas C. Kidd Trust

                                       /s/ RICHARD J. EFFRESS
                                       ------------------------------
                                       Richard J. Effress

                                       /s/ ANDREW D. LIPMAN
                                       ------------------------------
                                       Andrew D. Lipman

                                       /s/ ADAM D. LEHRHOFF
                                       ------------------------------
                                       Adam D. Lehrhoff

Agreed:

J.H. WHITNEY III, L.P.

By:  J.H. Whitney Equity Partners III, LLC,
     Its General Partner

By:  /s/
     ----------------------------------
     Name:
     A Managing Member

WHITNEY STRATEGIC PARTNERS III, L.P.

By:  J.H. Whitney Equity Partners III, LLC,
     Its General Partner

By:  /s/
     ----------------------------------
     Name:
     A Managing Member

MEDSOURCE TECHNOLOGIES, INC.

By:  /s/
     ----------------------------------

                                        2<PAGE>

                                                                   Exhibit 10.42

                             SHARE ESCROW AGREEMENT

                                 March 30, 1999
                                 --------------

         The parties to this agreement are (i) MedSource Technologies, Inc., a
Delaware corporation (the "Company"), (ii) the stockholders of the Company named
on Schedule A to this agreement (collectively, the "Stockholders"), (iii) J. H.
Whitney III, L.P., a Delaware limited partnership ("J. H. Whitney"), and Whitney
Strategic Partners III, L.P., a Delaware limited partnership (together with J.
H. Whitney, the "Investors"), and (iv) Parker Chapin Flattau & Klimpl, LLP, a
limited liability partnership (the "Escrow Agent").

         The Stockholders, the Investors and the Company are entering into a
share transfer agreement dated this date (the "Share Transfer Agreement")
pursuant to which the Stockholders have agreed to deposit with the Escrow Agent
certain shares of the capital stock of the Company to be held and disposed of
pursuant to the terms of this agreement.

         It is therefore agreed as follows:

         1.    Deposit of Escrow Shares.

         (a) Simultaneously with the execution of this agreement, each of the
Stockholders is delivering to the Escrow Agent a certificate or certificates
representing the number of shares of the Company's common stock, par value $.01
per share (the "Common Stock"), set forth opposite that Stockholder's name on
Schedule A to this agreement, together with duly executed, undated, blank stock
transfer powers with respect thereto (together with all dividends, payments,
earnings, proceeds or other distributions (collectively, "Proceeds") in respect
thereof or in respect of such Proceeds, the "Escrow Shares"), and the Escrow
Agent hereby acknowledges receipt thereof. The Escrow Agent shall hold in
accordance with the terms of this agreement the Escrow Shares and shall not
release the Escrow Shares except in accordance with this agreement. The
Stockholders shall have the right to vote or give consents with respect to the
Escrow Shares on all matters at all times prior to delivery of any such Escrow
Shares to the Investors pursuant to this agreement.

         (b) The Escrow Agent shall receive any funds paid as dividends or
otherwise in respect of the Escrow Shares and shall deposit such funds in an
interest bearing money market account in a New York City commercial bank or
shall otherwise invest such funds as jointly directed by a majority in interest
of the Investors and a majority in interest of the Stockholders.

         2.    Release of Escrow Shares.

<PAGE>

         (a) If at any time the Escrow Agent receives a written statement
purporting to be signed by a majority in interest of the Investors (an "Investor
Delivery Statement") and stating:

               (i)    that, in accordance with the Share Transfer Agreement, the
         Investors are entitled to a number/amount of Escrow Shares (and/or any
         amount of funds held in connection with the Escrow Shares); and

               (ii)   the aggregate number/amount of Escrow Shares to which the
         Investors are entitled;

then the Escrow Agent shall forthwith deliver a copy of the Investor Delivery
Statement to the Stockholders. If, within 15 days after delivery of the Investor
Delivery Statement to the Stockholders, the Escrow Agent receives a written
objection to the Investor Delivery Statement purporting to be signed by
Stockholders owning at least 50% of the Escrow Shares, then the provisions of
section 4 shall apply. If the Escrow Agent does not receive such a written
objection within that 15-day period, then the Escrow Agent shall promptly
deliver the stock certificates representing the Escrow Shares and shall make
arrangements for the Company to prepare stock certificates registered in the
respective names of the Investors and the Stockholders, as applicable, in
accordance with section 3, for the aggregate number of Escrow Shares specified
in the Investor Delivery Statement and, after receipt from the Company, shall
promptly (i) transfer to the Investors the number/amount of Escrow Shares,
including, without limitation, the funds, specified in the Investor Delivery
Statement and shall deliver to the Investors the certificates registered in the
names of the Investors, as set forth above in this section 2(a) and (ii)
transfer to the Stockholders the balance, if any, of such Escrow Shares,
including, without limitation, any funds, and deliver to the Stockholders the
certificates, if any, registered in the names of the Stockholders, as set forth
above in this section 2(a).

         (b) If at any time the Escrow Agent receives a written statement
purporting to be signed by Stockholders owning at least 50% of the Escrow Shares
(a "Stockholder Delivery Statement") and stating that, in accordance with the
Share Transfer Agreement (whether pursuant to section 1 or section 2 of the
Share Transfer Agreement), the Stockholders are entitled to any or all of the
Escrow Shares (and any funds held in connection herewith), then the Escrow Agent
shall forthwith deliver a copy of the Stockholder Delivery Statement to the
Investors. If, within 15 days after delivery of the Stockholder Delivery
Statement to the Investors, the Escrow Agent receives a written objection to the
Stockholder Delivery Statement purporting to be signed by the Threshold
Investors, then the provisions of section 4 shall apply. If the Escrow Agent
does not receive such a written objection within that 15-day period, then the
Escrow Agent shall promptly transfer the Escrow Shares and such funds to the
Stockholders and deliver each stock certificate registered in the name of a
Stockholder (and/or the funds) to such

                                      -2-

<PAGE>

Stockholder. The parties acknowledge that the Stockholders may be entitled to
deliver a Stockholder Delivery Statement pursuant to either section 1 or section
2 of the Share Transfer Agreement.

         3.    Proportional Delivery of Shares. In each case where shares are
required to be delivered to the Investors or Stockholders pursuant to this
agreement, such shares shall be delivered (i) if to the Investors, in the
percentages set forth on Schedule A opposite each Investor's respective name
thereon, as such Schedule may be modified from time to time by notice to the
Stockholders and the Escrow Agent from the a majority in interest of the
Investors, and (ii) if to the Stockholders, in the percentages set forth on
Schedule B opposite each Stockholder's respective name thereon. Upon delivery to
the Company of certificates representing such shares, the Company shall (i)
cooperate with the Escrow Agent to reissue certificates in accordance with the
foregoing, (ii) reissue certificates with respect to any remaining shares in the
names of the original owners, and (iii) deliver all such certificates to the
Escrow Agent. In the event any delivery of Escrow Shares shall include shares,
cash and/or other assets (collectively the "Assets"), each Investor and/or
Stockholder entitled to such Escrow Shares (the "Subject Shares"), shall receive
Assets in all such categories, and the proportion that each category of the
Assets to be delivered to each such Investor and/or Stockholder bears to all the
Assets to be delivered to such Investor and/or Stockholder shall equal the
proportion that such category of Assets to be delivered to each other Investor
and/or Stockholder entitled to receive Subject Shares bears to all the Assets to
be delivered to such other Investor and/or Stockholder.

         4.    Conflicting Demands.

         (a)   If conflicting or adverse claims or demands are made or notices
are served upon the Escrow Agent with respect to the escrow provided for herein,
the Escrow Agents shall be entitled to refuse to comply with any such claim or
demand and to withhold and stop all further performance of this escrow so long
as such disagreement shall continue. In so doing, the Escrow Agent shall not be
liable for damages, losses, expenses or interest to any party hereto or any
other person for its failure to comply with such conflicting or adverse demands.
The Escrow Agent shall be entitled to continue to so refrain and refuse to so
act until (a) the rights of the adverse claimants have been finally adjudicated
in a court assuming and having jurisdiction and venue over the parties and/or
the documents, instruments or funds involved herein or affected hereby or (b)
the Escrow Agent shall have received an executed copy of a dispositive
settlement agreement to which the parties hereto and all other adverse
claimants, if any, are parties and signatories. The Escrow Agent may seek the
advice of legal counsel in any dispute or question as to the construction of any
of the provisions of this agreement or its duties hereunder, and it shall incur
no liability and shall be fully protected in respect of any action taken,
omitted or suffered by it in good faith in accordance with the opinion of such
counsel. In making calculations of any amounts pursuant to this agreement, the

                                      -3-

<PAGE>

Escrow Agent shall be entitled to retain the services of such accountants as it
reasonably deems appropriate.

         (b)   If any controversy arises between one or more of the parties
hereto, the Escrow Agent shall not be required to resolve such controversy and
need not make any delivery of the Escrow Shares or any portion thereof but may
deposit the same with a court of competent jurisdiction in New York, New York
and, if it so commences and deposits the Escrow Shares, the Escrow Agent shall
be relieved and discharged from any further duties and obligations under this
agreement, or may retain the same without liability to anyone until the rights
of the parties to the dispute shall have finally been determined by mutual
agreement, or by final order, decree or judgment of a court of competent
jurisdiction, and the time for appeal has expired without an appeal having been
perfected, but the Escrow Agent shall be under no duty whatsoever to institute
or defend any such proceedings.

         5.    Term. The term of this agreement shall commence on the date of
this agreement and shall terminate on the date on which the all the Escrow
Shares have been delivered in accordance with this agreement.

         6.   Limitations Upon Liability of the Escrow Agent. The Escrow Agent
has been induced to accept its duties under this agreement by the following
terms and conditions:

         (a) Except for its own willful misconduct and, except with respect to
claims based upon willful misconduct that are successfully asserted against the
Escrow Agent, the Escrow Agent and its designees, partners, officers, directors,
stockholders, employees and other agents and representatives and successors
(collectively, the "Protected Parties") shall not be liable with respect to, and
the Stockholders and the Investors jointly and severally shall indemnify the
Protected Parties and hold them harmless from and against, any and all claims,
liabilities, losses, damages, costs, reasonable attorneys' fees and other
expenses arising out of or in connection with this agreement including but not
limited to any such matter relating to the taking of any action in accordance
with the terms and provisions of this agreement, for any mistake or error in
judgment, for compliance with any applicable law or any attachment, order or
other directive of any court or other authority (irrespective of any conflicting
term or provision of this agreement), or for any act or omission of any other
person engaged by the Escrow Agent in connection with this agreement; and each
party hereto hereby waives any and all claims and actions whatsoever against the
Protected Parties arising out of or related directly or indirectly to any and
all of the foregoing acts, omissions and circumstances. Furthermore, the
Protected Parties shall not incur any liability (other than for a person's own
acts or omissions breaching a duty owed to the claimant and amounting to gross
negligence or willful misconduct) for other acts and omissions arising out of or
related directly or indirectly to this agreement or the Escrow Shares; and each
party hereto hereby expressly

                                      -4-

<PAGE>

waives any and all claims and actions (other than those attributable to a
person's own acts or omissions breaching a duty owed to the claimant and
amounting to gross negligence or willful misconduct) against each of the
Protected Parties arising out of or related directly or indirectly to any and
all of the foregoing acts, omissions and circumstances. The foregoing
indemnities in this paragraph shall survive the resignation of the Escrow Agent
or the termination of this agreement.

         (b) The Escrow Agent shall be entitled to rely upon any judgment,
certification, demand, notice, instrument or other writing delivered to it
hereunder without being required to determine the authenticity or the
correctness of any fact stated therein or the propriety or validity of the
service thereof. The Escrow Agent may act in reliance upon any instrument or
signature believed by it to be genuine and may assume that any person purporting
to give any notice or receipt or advice or make any statement or execute any
document in connection with the provisions hereof has been duly authorized to do
so.

         7.    Fees and Expenses of Escrow Agent. The costs and expenses of the
Escrow Agent shall be paid by the Company.

         8.    Additional Matters Regarding the Escrow Agent. This agreement
shall not in any way prohibit or in any way restrict the Escrow Agent's legal
representation of the Company or any of the Stockholders, any and all of which
may be advised by the Escrow Agent on any and all matters pertaining to this
agreement. To the extent the Company and/or the Stockholders are or have been
represented by the Escrow Agent, the Company and the Stockholders hereby
irrevocably waive any conflict of interest and authorize and direct the Escrow
Agent to carry out the terms and provisions of this agreement fairly as to all
parties, without regard to any such representation and irrespective of the
impact upon the Company and the Stockholders. The Escrow Agent's only duties are
those expressly set forth in this agreement, and each party hereto hereby
authorizes the Escrow Agent to perform those duties in accordance with its usual
practices in holding assets of its own or those of other escrows. The Escrow
Agent may exercise or otherwise enforce any of its rights, powers, privileges,
remedies and interests under this agreement and applicable law or perform any of
its duties under this agreement by or through its partners, employees,
attorneys, agents or designees.

         9.    Successor Escrow Agent. The Escrow Agent (and any successor
escrow agent) may, at any time, resign as such by (i) giving written notice to
the Stockholders, the Investors and the Company and (ii) delivering the Escrow
Shares to any successor escrow agent mutually designated in writing by the
Stockholders and the Investors, or to any court of competent jurisdiction,
whereupon the Escrow Agent shall be discharged of and from any and all further
obligations arising in connection with this agreement.

                                      -5-

<PAGE>

         10.   Further Assurances. Each of the parties shall take such further
acts and execute and deliver such statements, assignments, agreements,
instruments and other documents as any other party from time to time reasonably
may request to effectuate the terms and provisions of this agreement, including
but not limited to such statements, assignments, agreements, instruments and
other documents as the Escrow Agent from time to time reasonably may request in
connection with the administration, maintenance, enforcement or adjudication of
this agreement in order to (a) give that Escrow Agent confirmation and assurance
of its rights, powers, privileges, remedies and interests under this agreement
and applicable law, (b) better enable the Escrow Agent to exercise any such
right, power, privilege or remedy, or (c) otherwise effectuate the purpose and
the terms and provisions of this agreement, each in such form and substance as
may be reasonably acceptable to the Escrow Agent.

         11.   Status of the Escrow Agent, Etc.

         (a)   Unless otherwise agreed to by the parties in writing, (i) the
duties and obligations of Escrow Agent shall be determined solely by the express
provisions of this agreement and (ii) the Escrow Agent shall not be bound in any
way by any agreement or contract among any of the parties, including the Share
Transfer Agreement (whether or not the Escrow Agent has knowledge thereof).

         (b)   The Escrow Agent is acting under this agreement as a stakeholder
only and shall be considered an independent contractor with respect to each
party hereto. The relationship of the parties with the Escrow Agent for this
purpose shall be governed solely by the terms hereof and no term or provision of
this agreement is intended to create, nor shall any such term or provision be
deemed to have created, any principal-agent, trust, joint venture, partnership,
debtor-creditor or attorney-client relationship between or among the Escrow
Agent and any of the parties hereto.

         (c)   The obligations of the Escrow Agent under this agreement shall
terminate at such time as the term of this agreement expires in accordance with
the provisions of section 5 or in the event the Escrow Agent deposits the Escrow
Shares (and any funds in connection therewith) with a court in accordance with
section 5.

         12.   Miscellaneous.

         (a) Notices. All notices, instructions and other communications in
connection with this agreement shall be in writing and shall be given by (and
effective when received by) (i) fax (with evidence of receipt) followed by
letter or other delivery, (ii) personal delivery or (iii) by a nationally
recognized overnight courier in each case to the parties at the address set
forth below (or at such other address as a party may specify in a notice to the
others):

                                      -6-

<PAGE>

         If to the Company:

               MedSource Technologies, Inc.
               Two Carlson Parkway
               Plymouth, Minnesota 55447
               Fax no.: 612-535-2049
               Attention: Chief Executive Officer

               and

               Kidd & Company, LLC
               Three Pickwick Plaza
               Greenwich, CT 06830
               Fax no.: 203-661-1839
               Attn:  Richard J. Effress

         With a copy to:

               Edward R. Mandell
               Parker Chapin Flattau & Klimpl, LLP
               1211 Avenue of the Americas
               New York, New York 10036-8735
               Fax no.: 212-704-6288

         If to an Investor or any Stockholder:

         To the address of such Investor or such Stockholder specified under the
         signature of such Investor or Stockholder at the end of this agreement.

         If to the Escrow Agent:

               Parker Chapin Flattau & Klimpl, LLP
               1211 Avenue of the Americas
               New York, New York 10036
               Fax no.: 212-704-6288
               Attention: Edward R. Mandell

         (b) No Waiver. No course of dealing and no delay on the part of any
party hereto in exercising any right, power or remedy conferred by this
agreement shall operate as a waiver thereof or otherwise prejudice such party's
rights, powers and remedies conferred by this agreement or shall preclude any
other or further exercise thereof or the exercise of any other right, power and
remedy.

                                      -7-

<PAGE>

         (c) Binding Effect. This agreement shall be binding upon and, except as
otherwise provided herein, shall inure to the benefit of the respective parties
and their permitted successors and assigns.

         (d) Assignability. The rights of each Investor under this agreement
shall be assignable upon the express written direction of such Investor. Neither
this Agreement nor any interest herein may be assigned by any Stockholder
without the prior written consent of the Threshold Investors. Any purported
assignment in violation of this section 11(d) shall be void ab initio.

         (e) Severability. Any provision of this agreement that is prohibited or
unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective
to the extent of such prohibition or unenforceability without invalidating the
remaining provisions hereof, and any such prohibition or unenforceability in any
jurisdiction shall not invalidate or render unenforceable such provision in any
other jurisdiction. To the extent permitted by applicable law, the parties
hereby waive any provision of law which renders any provisions hereof prohibited
or unenforceable in any respect.

         (f) Modification. No term or provision of this agreement may be
amended, altered, modified, rescinded or terminated, except upon the express
written consent of the party against whom the same is sought to be enforced.

         (g) Law Governing. This agreement shall be governed by and construed in
accordance with the law of the state of New York applicable to agreements made
and to be performed entirely in New York without regard to the conflicts of law
principles thereof.

         (h) Jurisdiction and Venue. Each of the parties hereto hereby
irrevocably consents and submits to the exclusive jurisdiction of the United
States District Court for the Southern District of New York in connection with
any proceeding arising out of or relating to this agreement or the transactions
contemplated hereby and waives any objection to venue in such courts; provided,
however, that if such court lacks jurisdiction with respect to such proceeding,
in which case, each of the parties hereto irrevocably consents to the
jurisdiction of the courts of the state of New York in connection with such
proceeding and waives any objection to venue in New York County, state of New
York. Service of any summons, complaint, notice or other process relating to
such Proceeding may be effected in the manner provided by section 12(a).

         (i) Headings. All headings and captions in this agreement are for
purposes of reference only and shall not be construed to limit or affect the
substance of this agreement.

                                      -8-

<PAGE>

         (j) Entire Agreement. This agreement contains, and is intended as, a
complete statement of all the terms of the arrangements between the parties with
respect to the matters provided for and supersedes any previous agreements and
understandings between the parties with respect to those matters.

                                       MEDSOURCE TECHNOLOGIES, INC.

                                       By: /s/ RICHARD J. EFFRESS
                                           -------------------------------------
                                           Name:  Richard J. Effress
                                           Title:  Chairman

                                      -9-

<PAGE>

                                       /s/ WILLIAM J. KIDD
                                       -----------------------------------------
                                       William J. Kidd
                                       Address:  51 Clapboard Ridge Road
                                                 Greenwich, CT 06830
                                                 Fax No.: 203-625-2632

                                       /s/ CARLA G. KIDD
                                       -----------------------------------------
                                       Carla G. Kidd
                                       Address:  51 Clapboard Ridge Road
                                                 Greenwich, CT 06830
                                                 Fax No.: 203-625-2632

                                       /s/ EDWARD R. MANDELL
                                       -----------------------------------------
                                       Edward R. Mandell, as Trustee under
                                        the Catherine M. Kidd Trust
                                       Address: c/o Kidd & Company, LLC
                                                    Three Pickwick Plaza
                                                    Greenwich, Connecticut 06830
                                                    Fax no.: 203-661-1839

                                      -10-

<PAGE>

                                       /s/ EDWARD R. MANDELL
                                       -----------------------------------------
                                       Edward R. Mandell, as Trustee under
                                        the Cara E. Kidd Trust
                                       Address: c/o Kidd & Company, LLC
                                                    Three Pickwick Plaza
                                                    Greenwich, Connecticut 06830
                                                    Fax no.: 203-661-1839

                                       /s/ EDWARD R. MANDELL
                                       -----------------------------------------
                                       Edward R. Mandell, as Trustee under
                                        the Thomas C. Kidd Trust
                                       Address: c/o Kidd & Company, LLC
                                                    Three Pickwick Plaza
                                                    Greenwich, Connecticut 06830
                                                    Fax no.: 203-661-1839

                                       /s/ CLARICE E. WEBB
                                       -----------------------------------------
                                       Clarice E. Webb
                                       Address:  217 Bridge Street
                                                 Stamford, Connecticut 06905
                                                 Fax no.:

                                       /s/ JOHN P. NEAFSEY
                                       -----------------------------------------
                                       John P. Neafsey
                                       Address:  John P. Neafsey
                                                 13 Valley Road
                                                 Wilson Pt.
                                                 South Norwich, CT 06854
                                                 Fax no.: 203-831-8455

                                      -11-

<PAGE>

                                       /s/ RICHARD J. EFFRESS
                                       -----------------------------------------
                                       Richard J. Effress
                                       Address: c/o Kidd & Company, LLC
                                                    Three Pickwick Plaza
                                                    Greenwich, Connecticut 06830
                                                    Fax no.: 203-661-1839

                                       /s/ ANDREW D. LIPMAN
                                       -----------------------------------------
                                       Andrew D. Lipman
                                       Address: c/o Kidd & Company, LLC
                                                    Three Pickwick Plaza
                                                    Greenwich, Connecticut 06830
                                                    Fax no.: 203-661-1839

                                       /s/ ADAM D. LEHRHOFF
                                       -----------------------------------------
                                       Adam D. Lehrhoff
                                       Address: c/o Kidd & Company, LLC
                                                    Three Pickwick Plaza
                                                    Greenwich, Connecticut 06830
                                                    Fax no.: 203-661-1839

                                       /s/ JOHN C. HERTIG
                                       -----------------------------------------
                                       John C. Hertig
                                       Address:  124 Lamberts Lane

                                      -12-

<PAGE>

                                                 Cohasset, MA 02025
                                                 Fax No.: 781-682-0308

                                       /s/ WILLIAM ALTIERI
                                       -----------------------------------------
                                       William Altieri
                                       Address: c/o Thayer Advisory Group
                                                    115 Broad Street
                                                    Boston, Massachusetts 02110
                                                    Fax No.: 617-350-5595

                                      -13-

<PAGE>

                                       J. H. WHITNEY III, L.P.

                                       By: J. H. Whitney Equity Partners III,
                                           LLC, its General Partner

                                       By: /s/
                                           -------------------------------------
                                           Name:
                                           Title:   A Managing Member
                                       Address: 177 Broad Street
                                                Stamford, Connecticut 06901
                                                Attention: Mr. Michael R. Stone
                                                           Mr. Daniel J. O'Brien
                                                Fax no.: (203) 973-1422

                                       With a copy to

                                       Morrison Cohen Singer & Weinstein, LLP
                                       750 Lexington Avenue
                                       New York, New York 10022
                                       Attention: David A. Scherl, Esq.
                                       Fax no.: 212-735-8708

                                      -14-

<PAGE>

                                       WHITNEY STRATEGIC PARTNERS III,L.P.

                                       By: J. H. Whitney Equity Partners III,
                                           LLC

                                       By: /s/
                                           -------------------------------------
                                           Name:
                                           Title:   A Managing Member
                                       Address: 177 Broad Street
                                                Stamford, Connecticut 06901
                                                Attention: Mr. Michael R. Stone
                                                           Mr. Daniel J. O'Brien
                                                Fax no.: (203) 973-1422

                                       With a copy to

                                       Morrison Cohen Singer & Weinstein, LLP
                                       750 Lexington Avenue
                                       New York, New York 10022
                                       Attention: David A. Scherl, Esq.
                                       Fax no.: 212-735-8708

                                      -15-

<PAGE>

                                       PARKER CHAPIN FLATTAU & KLIMPL, LLP

                                       By: /s/ TIMOTHY I. KAHLER
                                           -------------------------------------
                                           Timothy I. Kahler,
                                               a Partner

                                      -16-

<PAGE>

                                                                      SCHEDULE A
                                                       To Share Escrow Agreement

                     List of Stockholders and Escrow Shares

Name of Stockholder                 Number of Escrow Shares           Percentage
-------------------                 -----------------------           ----------

William J. Kidd                           30,380                        20.253%
Carla G. Kidd                             30,380                        20.252%
Edward R. Mandell, as Trustee under
 the Catherine M. Kidd Trust              10,126                         6.751%
Edward R. Mandell, as Trustee under
 the Cara E. Kidd Trust                   10,126                         6.751%
Edward R. Mandell, as Trustee under
 the Thomas C. Kidd Trust                 10,126                         6.751%
Clarice Webb                               1,350                         0.900%
John P. Neafsey                            1,350                         0.900%
Richard J. Effress                        16,877                        11.252%
Andrew D. Lipman                          16,877                        11.252%
Adam D. Lehrhoff                           7,425                         4.950%
John C. Hertig                            12,000                         8.000%
William Altieri                            2,983                         1.988%
                                          ------                       --------

         Total Escrow Shares             150,000                       100.000%
                                         =======                       ========

                                      -17-

<PAGE>

                                                                      SCHEDULE B
                                                       To Share Escrow Agreement

            List of Investors and Shares of Series B Preferred Stock

Name of Stockholder           Number of Shares     Purchase Price     Percentage
-------------------           ----------------     --------------     ----------

J. H. Whitney III L.P.            292,941.18          21,481,376         97.64%
Whitney Strategic
 Partners III, L.P.                 7,058.82             518,624          2.36
                              --------------       -------------

         Total                    300,000          $  22,000,000        100.00%

                                      -18-

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