Document:

Form of Floating Rate Senior Note due 2014

 Exhibit 4.26 
 UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR SECURITIES OF THIS SERIES IN CERTIFICATED FORM, THIS SECURITY MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE
DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH DEPOSITARY. UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF SUCH A
TRANSFEROR TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF SUCH A TRANSFEREE OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF SUCH A TRANSFEROR
AND ANY PAYMENT IS MADE TO SUCH A TRANSFEREE, ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, SUCH A TRANSFEROR, HAS AN INTEREST HEREIN. 
  

			
	 REGISTERED
	  	REGISTERED
	 No. -1-
	  	$250,000,000
	 CUSIP: 585515 AH 2
	  	x GLOBAL SECURITY

 MELLON FUNDING CORPORATION 
 FLOATING RATE SENIOR NOTES DUE 2014 
 MELLON FUNDING CORPORATION, a corporation duly organized and
existing under the laws of the Commonwealth of Pennsylvania (herein called the “Company”, which term includes any successor Person under the Indenture hereinafter referred to), for value received, hereby promises to pay to CEDE &
CO., or registered assigns, the principal sum of TWO HUNDRED FIFTY MILLION Dollars ($250,000,000) on May 15, 2014 and to pay interest thereon from May 15, 2007 or from the most recent Interest Payment Date to which interest has been paid
or duly provided for, quarterly on February 15, May 15, August 15 and November 15 in each year, commencing August 15, 2007, at a rate per annum for each such Interest Period (as defined below) determined in
accordance with the next following paragraph, until the principal hereof is paid or made available for payment, and (to the extent that the payment of such interest shall be legally enforceable) at a rate per annum for each Interest Period
determined in accordance with the next following paragraph on any overdue principal and premium and on any overdue installment of interest. The interest so payable, and punctually paid or duly provided for, on any Interest Payment Date will, as
provided in such Indenture, be paid to the Person in whose name this Security (or one or more Predecessor Securities) is registered at the close of business on the Regular Record Date for such interest, which shall be
February 1, May 1, August 1 or November 1 (whether or not a Business Day), as the case may be, next preceding such Interest Payment Date. Any such interest not so punctually paid or duly provided for will forthwith
cease to be payable to the Holder on such Regular Record Date and may either be paid to the Person in whose name this Security (or one or more Predecessor Securities) is registered at the close of business on a Special Record Date for the payment of
such Defaulted Interest to be fixed by the Trustee, notice whereof shall be given to Holders of Securities of this series not less than 10 days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent
with the requirements of any securities exchange on which the Securities of this series may be listed, and upon such notice as may be required by such exchange, all as more fully provided in said Indenture. 

 This Security is one of the series of Floating Rate Senior Notes due 2014 (the “Notes”). 
 The interest rate per annum on the Notes in effect for each day of any Interest Period (as defined below) will be equal to LIBOR (as defined below) plus 0.15%. The
interest rate for each Interest Period will be reset on the Interest Payment Date (each such date an “Interest Reset Date”), beginning on May 15, 2007 until Maturity. If any Interest Reset Date is not a Business Day, then the Interest
Reset Date will be postponed to the next succeeding Business Day except that if such Business Day is in the next succeeding calendar month, such Interest Reset Date will be the next preceding Business Day. 
 “Interest Period” means the period beginning on and including May 15, 2007 and ending on and excluding August 15, 2007 and each succeeding
period beginning on and including an Interest Payment Date and ending on and excluding the next succeeding Interest Payment Date, and in the case of the last such period, beginning on and including an Interest Payment Date immediately preceding
Maturity and ending on and excluding Maturity. If any Interest Payment Date is not a Business Day, the interest payment will be made on the next Business Day. If such next Business Day falls in the next calendar month, principal or interest will be
paid on the preceding day that is a Business Day. If Maturity is not a Business Day, then the principal amount of the Notes plus accrued and unpaid interest thereon shall be paid on the next succeeding Business Day and no interest shall accrue for
the Maturity or any day thereafter. 
 “LIBOR” means the rate on the second London Business Day preceding the Interest Reset Date for such Interest
Rate Period (the “Interest Determination Date”) determined by Mellon Bank, N.A., acting as calculation agent (the “Calculation Agent”), in accordance with the following provisions: 
 LIBOR will be determined on the applicable Interest Determination Date on the basis of the offered rate for deposits of U.S. dollars having a maturity of three months,
commencing on the first day of the applicable Interest Period, which appears on Reuters Screen LIBOR01 (or such other page as may replace Reuters Screen LIBOR01), as of 11:00 A.M., London time, on such Interest Determination Date. If no such rate
appears on Reuters Screen LIBOR01 (or such other page as may replace such page), LIBOR in respect to that Interest Determination Date will be determined in accordance with (2) below. 
 On any applicable Interest Determination Date on which no offered rates for deposits of U.S. dollars having a maturity of three months appear on Reuters Screen LIBOR01
(or such other page as may replace such page) as described in (1) above, LIBOR will be determined on the basis of the rates at approximately 11:00 A.M., London time, on such Interest Determination Date at which deposits in U.S. dollars having a
maturity of three months commencing on the first day of the applicable Interest Period are offered by four major banks in the London interbank market selected by the Calculation Agent to prime banks in the London interbank market and in a principal
amount of not less than U.S.$1,000,000 that is representative of a single transaction in such market at such time. The Calculation Agent will request the principal London office of each such bank to provide a quotation of its rate. If at least two
such quotations are provided, LIBOR for such Interest Determination Date will be the arithmetic mean of such quotations. If fewer than two quotations are provided, LIBOR for such Interest Determination Date will be the arithmetic mean of the rates
quoted at approximately 11:00 A.M., New York City time, on such Interest Determination Date by three major banks in New York City, selected by the Calculation Agent for loans in U.S. dollars to leading European banks, having a maturity of three
months 

 
commencing on the first day of the applicable Interest Period and in a principal amount of not less than U.S.$1,000,000 that is representative for a single
transaction in such market at such time. Finally, if the three banks selected by the Calculation Agent are not quoting as mentioned above, LIBOR will remain LIBOR then in effect on such Interest Determination Date. 
 The following terms have the following meanings: 
 “Business Day”
means any day that (a) is not a Saturday or Sunday, (b) in New York, New York, is not a day on which banking institutions generally are authorized or required by law or executive order to close, and (c) is also a London banking day.

 “London banking day” means any day on which dealings in deposits in U.S. dollars are transacted in the London interbank market. 
 Interest on the Notes will be computed on the basis of the actual number of days in the applicable Interest Period divided by 360. The interest rate on this Security
will in no event be higher than the maximum rate permitted by Pennsylvania law, as the same may be modified by United States law of general application. At the request of the Holder hereof, the Calculation Agent will provide the interest rate hereon
then in effect and, if different, the interest rate which will become effective as a result of a determination made on the most recent Interest Determination Date. All calculations and determinations made by the Calculation Agent shall, in the
absence of manifest error, be conclusive for all purposes and shall be binding on the Company, the Guarantor, the Trustee and the Holders of the Securities. 
 If this Security is a Global Security (as specified on the face hereof), this Security is exchangeable in whole for definitive Securities of this series in registered form (“Registered Securities”) of like tenor and of an equal
aggregate principal amount only if (i) the Depositary notifies the Company that it is unwilling or unable to continue as Depositary for this Global Security or if at any time the Depositary ceases to be a clearing agency registered under the
Securities Exchange Act of 1934, as amended, (ii) the Company executes and delivers to the Trustee a Company Order providing that this Global Security shall be exchangeable for definitive Registered Securities or (iii) any event shall have
happened and be continuing which, after notice or lapse of time, or both, would become an Event of Default with respect to the Securities of the series of which this Global Security is a part. In the event this Global Security is exchangeable
pursuant to the preceding sentence, it shall be exchanged in whole for definitive Registered Securities of this series, of like tenor and of an equal aggregate principal amount in denominations of U.S. $2,000 and in integral multiples of $1,000 in
excess thereof; provided that, in the case of clauses (ii) and (iii) above, definitive Registered Securities of this series will be issued in exchange for this Global Security only if such definitive Registered Securities were
requested by written notice to the Security Registrar by or on behalf of a Person who is a beneficial owner of an interest herein given through the Holder hereof. Any definitive Registered Securities of this series issued in exchange for this Global
Security shall be registered in the name or names of such Person or Persons as the Holder hereof shall instruct the Security Registrar. Except as provided above, owners of beneficial interests in this Global Security will not be entitled to receive
physical delivery of Securities in definitive form and will not be considered the Holders thereof for any purpose under the Indenture. 
 If this Security is
a Global Security, except as provided in the next paragraph, no beneficial owner of any portion of this Global Security shall be entitled to receive payment of accrued interest hereon until this Global Security has been exchanged for one or more
definitive Registered Securities of this series, as provided herein and in the Indenture. 
 If this Security is a Global Security and if a definitive
Registered Security or Registered 

 
Securities of this series are issued in exchange for this Global Security after the close of business at the office or agency where such exchange occurs on
(i) any Regular Record Date and before the opening of business at such office or agency on the related Interest Payment Date, or (ii) any Special Record Date and before the opening of business at such office or agency on the related
proposed date for payment of Defaulted Interest or interest on Defaulted Interest, as the case may be, accrued interest will not be payable on such Interest Payment Date or proposed date for payment, as the case may be, in respect of such Registered
Security, but will be payable on such Interest Payment Date or proposed date for payment, as the case may be, only to the Holder hereof, and the Holder hereof will undertake in such circumstances to credit such interest to the account or accounts of
the Persons who were the beneficial owners of any portion of this Global Security on such Regular Record Date or Special Record Date, as the case may be. 
 If this Security is a Global Security, payment of the principal of and any premium or interest hereon will be made on each Interest Payment Date and at the Maturity Date, as the case may be, by the Trustee by wire transfer of immediately
available funds, in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts, to an account of the registered Holder hereof at the Federal Reserve Bank of New York,
provided that payment at the Maturity Date hereof shall be made against presentation of this Security at the office of the Trustee, currently located at 101 Barclay Street, New York, New York 10286. If this Security is not a Global Security,
(i) the principal of and any interest and premium hereon payable at the Maturity Date hereof will be paid in immediately available funds, in such coin or currency of the United States of America as at the time of payment is legal tender for
payment of public and private debts, against presentation of this Security at the aforementioned office of the Trustee, and (ii) all interest payments hereon other than interest due at the Maturity Date hereof will be made by check drawn on the
Trustee and mailed by the Trustee to the person entitled thereto as provided herein, provided that Holders of $10,000,000 or more in aggregate principal amount of Securities of this series shall be entitled to receive such payments by wire
transfer of immediately available funds if appropriate wire transfer instructions have been received in writing by the Trustee not less than 16 days prior to the applicable Interest Payment Date. 
 Reference is hereby made to the further provisions of this Security set forth on the reverse hereof, which further provisions shall for all purposes have the same effect
as if set forth at this place. 
 This Security is not a deposit and is not insured by any federal agency. 
 Unless the certificate of authentication hereon has been executed by the Trustee referred to on the reverse hereof, or by an Authenticating Agent, by manual signature,
neither this Security nor the Guarantee endorsed hereon shall be entitled to any benefit under the Indenture or be valid or obligatory for any purpose. 

 IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed, manually or in facsimile, by its duly
authorized officer under its corporate seal. 
  

			
	 MELLON FUNDING CORPORATION

		
	By:	 	 /s/ Michael A. Bryson

	Name:	 	Michael A. Bryson
	Title:	 	President and Chief Executive Officer

  

			
	 Attest:

	
	 /s/ Michael J. Baker

	 Secretary

	  
 Dated: May 15,
2007

	  
 CERTIFICATE OF
AUTHENTICATION
 This is one of the Securities of the
series designated herein referred to
in the within-mentioned
Indenture.

	  
 THE BANK OF NEW YORK as
Trustee

		
	 By:
	 	 /s/ James D. Heaney

		 	Authorized Signatory

 MELLON FUNDING CORPORATION 
 FLOATING RATE SENIOR NOTES DUE 2014 
 This Security is one of a duly authorized series of Securities of the Company (herein
called the “Securities”), issued and to be issued in one or more series under an Indenture, dated as of May 2, 1988, as supplemented by the First Supplemental Indenture, dated as of November 29, 1990, and the Second Supplemental
Indenture, dated as of June 12, 2000 (together herein called the “Indenture”), each among the Company, the Guarantor and The Bank of New York (as successor to JPMorgan Chase Bank, N.A., as successor to The Chase Manhattan Bank,
National Association), as Trustee (herein called the “Trustee”, which term includes any successor trustee under the Indenture), to which Indenture and all indentures supplemental thereto reference is hereby made for a statement of the
respective rights, limitations of rights, duties and immunities thereunder of the Company, the Guarantor, the Trustee and the Holders of the Securities and of the terms upon which the Securities are, and are to be, authenticated and delivered. The
Securities may be issued in different series, as in the Indenture provided. This Security is one of the series designated on the face hereof, issued under and entitled to the benefits of the Indenture and limited (except as otherwise provided in the
Indenture) to an aggregate principal amount of $250,000,000. 
 If an Event of Default with respect to Securities of this series shall occur and be
continuing, the principal of the Securities of this series may be declared due and payable in the manner and with the effect provided in the Indenture. Upon payment (i) of the amount of principal so declared due and payable and (ii) of
interest on any overdue principal and overdue interest (in each case to the extent that the payment of such interest shall be legally enforceable), all of the Company’s obligations in respect of the payment of the principal of and interest on
the Securities of this series shall terminate. 
 The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the
modification of the rights and obligations of the Company and the Guarantor and the rights of the Holders of the Securities of each series to be affected under the Indenture at any time by the Company, the Guarantor and the Trustee with the consent
of the Holders of not less than 66 2/3% in aggregate principal amount of the Securities at the time Outstanding of each series to be affected. The Indenture also contains provisions permitting the Holders of specified percentages in principal amount
of the Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by the Company or the Guarantor with certain provisions of the Indenture and certain past defaults under the
Indenture and their consequences. Any such consent or waiver by the Holder of this Security shall be conclusive and binding upon such Holder and upon all future Holders of this Security and of any Security issued upon the registration of transfer
hereof or in exchange herefor or in lieu hereof, whether or not notation of such consent or waiver is made upon this Security. 
 The Guarantor, or a
Subsidiary thereof, may directly assume, by a supplemental indenture, the due and punctual payment of the principal of (and premium, if any) and interest on all the Securities, in which case the Company shall be released from its liability as
obligor on the Securities. 
 No reference herein to the Indenture and no provision of this Security or of the Indenture shall alter or impair the obligation
of the Company, which is absolute and unconditional, to pay the principal of (and premium, if any) and interest on this Security at the times, place and rate, and in the coin or currency, herein prescribed. 
 As provided in the Indenture and subject to certain limitations therein set forth, the transfer of 

 
this Security is registrable in the Security Register, upon surrender of this Security for registration of transfer at the office or agency of the Company in
any place where the principal of (and premium, if any) and interest on this Security are payable, duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Company and the Security Registrar duly executed by,
the Holder hereof or his attorney duly authorized in writing, and thereupon one or more new Securities of this series and of like tenor, of authorized denominations and for the same aggregate principal amount, will be issued to the designated
transferee or transferees. 
 The Securities of this series are issuable only in registered form without coupons in denominations of $2,000 and integral
multiples of $1,000 in excess thereof. As provided in the Indenture and subject to certain limitations therein set forth, Securities of this series are exchangeable for a like aggregate principal amount of Securities of this series and of like tenor
of a different authorized denomination, as requested by the Holder surrendering the same. 
 No service charge shall be made for any such registration of
transfer or exchange, but the Company may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection therewith. 
 Prior to due presentment of this Security for registration of transfer, the Company, the Guarantor, the Trustee and any agent of the Company, the Guarantor or the Trustee may treat the Person in whose name this Security is registered as the
owner hereof for all purposes, whether or not this Security be overdue, and neither the Company, the Guarantor, the Trustee nor any such agent shall be affected by notice to the contrary. 
 All terms used in this Security which are defined in the Indenture shall have the meanings assigned to them in the Indenture. 

 ABBREVIATIONS 
 The following abbreviations, when used in the inscription on the face of this instrument, shall be construed as though they were written out in full according to applicable laws or regulations. 
 TEN COM – as tenants in common 
 TEN
ENT – as tenants by the entireties 
 JT TEN – as joint tenants with right of survivorship and not as tenants in common 

 

							
	 UNIF GIFT MIN ACT–
	 	 Custodian
	  	
		 	(Cust)	  	(Minor)	  	
			
		 	 Under Uniform Gifts to Minors Act
	  	
		 	 (State)
	  	

 Additional abbreviations may also be used though not in the above list. 

 FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto 
 Please Insert Social Security or Other 
 Identifying Number of Assignee: 
 ____________________________________________________________________________________________________________ 
 ____________________________________________________________________________________________________________ 
 PLEASE PRINT OR
TYPEWRITE NAME AND ADDRESS 
 INCLUDING ZIP CODE OF ASSIGNEE: 
 ____________________________________________________________________________________________________________ 
 ____________________________________________________________________________________________________________ 
 ____________________________________________________________________________________________________________ 
 the within Security and all rights
thereunder, hereby irrevocably constituting and appointing 
 ____________________________________________________________________________________________________________ 
 _________________________________________________________________attorney to transfer said Security on the Security Register of the Company, with full power of substitution in the premises. 
  

											
	 Dated:
	 	  
	 		 		 	  

		 		 		 		 	NOTICE: The signature to this assignment must correspond with the name as written upon the face of this Security in every particular, without alteration or enlargement or any change
whatever.

 GUARANTEE 
 OF 
 MELLON FINANCIAL CORPORATION 
 For value received, Mellon Financial Corporation, a corporation duly organized and existing under the laws of the Commonwealth of Pennsylvania (herein called the “Guarantor”), hereby unconditionally
guarantees to the Holder of the Security upon which this Guarantee is endorsed the due and punctual payment of the principal of (and premium, if any) and interest on said Security, when and as the same shall become due and payable, whether at
maturity, by acceleration or redemption or otherwise, according to the terms thereof and of the Indenture referred to therein. In case of the failure of Mellon Funding Corporation or any successor thereto (the “Company”) punctually to pay
any such principal, premium or interest, the Guarantor hereby agrees to cause any such payment to be made punctually when and as the same shall become due and payable, whether at maturity, upon acceleration or redemption or otherwise, and as if such
payment were made by the Company. 
 The Guarantor hereby agrees that its obligations hereunder shall be as principal and not merely as surety, and shall be
absolute and unconditional, irrespective of, and shall be unaffected by, any invalidity, irregularity or unenforceability of said Security or said Indenture, any failure to enforce the provisions of said Security or said Indenture, or any waiver,
modification, consent or indulgence granted to the Company with respect thereto, by the Holder of said Security or the Trustee under said Indenture, the recovery of any judgment against the Company or any action to enforce the same, or any other
circumstances which may otherwise constitute a legal or equitable discharge of a surety or guarantor. The Guarantor hereby waives diligence, presentment, demand of payment, filing of claims with a court in the event of merger, insolvency or
bankruptcy of the Company, any right to require a proceeding first against the Company, protest or notice with respect to said Security or the indebtedness evidenced thereby and all demands whatsoever, and covenants that this Guarantee will not be
discharged except by payment in full of the principal of (and premium, if any) or interest on said Security and the complete performance of all other obligations contained in said Security. 
 The Guarantor shall be subrogated to all rights of the Holder of said Security against the Company in respect of any amounts paid to such Holder by the Guarantor
pursuant to the provisions of this Guarantee; provided, however, that the Guarantor shall not be entitled to enforce, or to receive any payments arising out of or based upon, such right of subrogation until the principal of (and
premium, if any) and interest on all Securities issued under said Indenture shall have been paid in full. 
 Subject to the next following paragraph, the
Guarantor hereby certifies and warrants that all acts, conditions and things required to be done and performed and to have happened precedent to the creation and issuance of this Guarantee and to constitute the same the valid obligation of the
Guarantor have been done and performed and have happened in due compliance with all applicable laws. 
 This Guarantee shall not be valid or become
obligatory for any purpose until the certificate of authentication on said Security shall have been signed manually by or on behalf of the Trustee under said Indenture. 
 This Guarantee shall be deemed to be a contract made under the laws of the Commonwealth of Pennsylvania, and for all purposes shall be governed by and construed in accordance with the laws of the Commonwealth of
Pennsylvania, except as otherwise required by mandatory provisions of law. 

 IN WITNESS WHEREOF, the Guarantor has caused this Guarantee to be duly executed, manually or in facsimile, by its duly
authorized officer under its corporate seal. 
 Dated: May 15, 2007 
  

			
	 MELLON FINANCIAL CORPORATION

		
	By:	 	 /s/ Michael A. Bryson

	Name:	 	Michael A. Bryson
	Title:	 	Chief Financial Officer

	
	
	 Attest:

	
	 /s/ Carl Krasik

	 SecretaryAmended and Restated Credit Agreement and Amendment to Guaranty Agreement

 Exhibit 10.1 
 Execution Version 
 AMENDMENT NO. 4 TO AMENDED AND RESTATED CREDIT AGREEMENT 
 AND AMENDMENT NO. 2 TO GUARANTY AGREEMENT 
 This Amendment No. 4 to Amended and Restated Credit Agreement and Amendment No. 2 to Guaranty Agreement (this “Agreement”) dated as of May 16, 2007 is made by and among PRECISION CASTPARTS CORP., an
Oregon corporation (the “Borrower”), BANK OF AMERICA, N.A., a national banking association organized and existing under the laws of the United States (“Bank of America”), in its capacity as
administrative agent for the Lenders (as defined in the Credit Agreement (as defined below)) (in such capacity, the “Administrative Agent”), each of the Lenders signatory hereto, and each of the Guarantors (as defined in the
Credit Agreement) signatory hereto. 
 W I T N E S S E T H: 
 WHEREAS, the Borrower, the Administrative Agent and the Lenders have entered into that certain Amended and Restated Credit Agreement dated as of
October 14, 2005, as amended by Amendment No. 1 and Waiver to Credit Agreement dated as of November 16, 2005, as further amended by Amendment No. 2 and Waiver to Credit Agreement dated as of December 16, 2005 and as further
amended by Amendment No. 3 and Waiver to Credit Agreement dated as of January 31, 2006 (as so amended, as hereby amended and as from time to time hereafter further amended, modified, supplemented, restated, or amended and restated, the
“Credit Agreement”; capitalized terms used in this Agreement not otherwise defined herein shall have the respective meanings given thereto in the Credit Agreement), pursuant to which the Lenders have made available to the
Borrower a revolving credit facility, including a letter of credit facility and a swing line facility; and 
 WHEREAS, each of the
Guarantors has entered into a Guaranty pursuant to which it has guaranteed the payment and performance of the obligations of the Borrower under the Credit Agreement and the other Loan Documents; and 
 WHEREAS, the Borrower has advised the Administrative Agent and the Lenders that it and the Guarantors desire to amend certain provisions of the
Credit Agreement and the Guaranty as set forth below, and the Administrative Agent and the Lenders signatory hereto are willing to effect such amendment on the terms and conditions contained in this Agreement; 
 NOW, THEREFORE, in consideration of the premises and further valuable consideration, the receipt and sufficiency of which is hereby acknowledged,
the parties hereto agree as follows: 
 1. Amendments to Credit Agreement. Subject to the terms and conditions set forth herein, the
Credit Agreement is hereby amended as follows: 
 (a) The grid set forth in the definition of “Applicable Rate” in
Section 1.02 of the Credit Agreement is hereby deleted in its entirety and replaced with the following in lieu thereof: 

 Applicable Rate 
  

									
	 Pricing Level
	 	 Debt Ratings S&P/Moody’s
	 	 Facility Fee
	 	 Utilization Fee
	 	 Eurodollar Rate +
 Letters of Credit

	 1
	 	BBB+ / Baa1 or better	 	0.080%	 	0.050%	 	0.270%
	 2
	 	BBB / Baa2	 	0.100%	 	0.050%	 	0.350%
	 3
	 	BBB- / Baa3	 	0.125%	 	0.075%	 	0.500%
	 4
	 	BB+ / Ba1	 	0.150%	 	0.125%	 	0.600%
	 5
	 	BB / Ba2 or worse	 	0.250%	 	0.250%	 	0.750%

 (b) The definition of “Obligations” in Section 1.02 of the
Credit Agreement is hereby deleted in its entirety and replaced with the following in lieu thereof: 
 “
‘Obligations’ means all advances to, and debts, liabilities, obligations, covenants and duties of, the Borrower or any Subsidiary arising under any Loan Document or otherwise with respect to any Loan or Letter of Credit, or arising
under any Related Credit Arrangement, in each case whether direct or indirect (including those acquired by assumption), absolute or contingent, due or to become due, now existing or hereafter arising and including interest and fees that accrue after
the commencement by or against the Borrower or any Subsidiary or any Affiliate thereof of any proceeding under any Debtor Relief Laws naming such Person as the debtor in such proceeding, regardless of whether such interest and fees are allowed
claims in such proceeding.” 
 (c) The definition of “Threshold Amount” in Section 1.02 of the
Credit Agreement is hereby deleted in its entirety and replaced with the following in lieu thereof: 
 “
‘Threshold Amount’ means $50,000,000.” 
 (d) The definition of “Revolving Credit Maturity
Date” in Section 1.02 of the Credit Agreement is hereby deleted in its entirety and replaced with the following in lieu thereof: 
 “ ‘Revolving Credit Maturity Date’ means (a) May 16, 2012 (subject to extension in accordance with Section 2.15 hereof) or (b) such earlier date upon which the
Aggregate Revolving Credit Commitments may be terminated in accordance with the terms hereof.” 
 (e) The following new
definitions are hereby added to Section 1.02 of the Credit Agreement in their proper alphabetical order: 
 “
‘Related Credit Arrangements” means, collectively, Related Swap Contracts and Related Treasury Management Arrangements.” 
  

 2 

 ‘Related Treasury Management Arrangements” means all arrangements for
the delivery of services pursuant to any Treasury Management Agreement to or for the benefit of the Borrower or any Subsidiary which are entered into or maintained with a Lender or Affiliate of a Lender and which are not prohibited by the express
terms of the Loan Documents. 
 ‘Treasury Management Agreement’ means any agreement governing the provision
of treasury or cash management services, including deposit accounts, credit or debit cards, funds transfer, automated clearinghouse, zero balance accounts, returned check concentration, controlled disbursement, lockbox, account reconciliation and
reporting and trade finance services.” 
 (f) Section 2.09(b) of the Credit Agreement is hereby amended by:

 (i) deleting the phrase “equal to 0.125%” therein and replacing it with “equal to the Applicable Rate”
in lieu thereof, and 
 (ii) deleting the sentence “The Utilization Fee shall be calculated quarterly in arrears”
therein and replacing it with “The Utilization Fee shall be calculated quarterly in arrears, and if there is any change in the Applicable Rate during any quarter, the actual daily amount shall be computed and multiplied by the Applicable Rate
separately for each period during such quarter that such Applicable Rate was in effect.” in lieu thereof. 
 (g)
Section 2.14(a) of the Credit Agreement is hereby amended by deleting the reference to “$250,000,000” therein and replacing it with “$500,000,000” in lieu thereof. 
 (h) The following new Section 2.15 is hereby added to the Credit Agreement: 
 “2.15 Extension of Revolving Credit Maturity Date. 
 (a) Requests for Extension. The Borrower may, by notice to the Administrative Agent (who shall promptly notify the Lenders) request
that each Lender extend such Lender’s Revolving Credit Maturity Date for an additional year from the then-existing Revolving Credit Maturity Date, such request to be made (i) in the event of the first extension option, not earlier than 60
days and not later than 45 days prior to May 16, 2008 (the “First Extension Date”), and (ii) in the event of the second extension option, not earlier than 60 days and not later than 45 days prior to May 16, 2009 (the
“Second Extension Date” and together with the First Extension Date, the “Extension Dates”). 
 (b) Lender Elections to Extend. In case of a request for extension at either Extension Date, each Lender, acting in its sole and individual discretion, shall, by notice to the Administrative Agent given 

  

 3 

 
not later than the date (the “Notice Date”) that is 25 days prior to the applicable Existing Revolving Credit Maturity Date, advise the
Administrative Agent whether or not such Lender agrees to such extension (and each Lender that determines not to so extend its Revolving Credit Maturity Date (a “Non-Extending Lender”) shall notify the Administrative Agent of such
fact promptly after such determination (but in any event no later than the Notice Date) and any Lender that does not so advise the Administrative Agent on or before the Notice Date shall be deemed to be a Non-Extending Lender. The election of any
Lender to agree to such extension shall not obligate any other Lender to so agree. 
 (c) Notification by Administrative
Agent. The Administrative Agent shall notify the Borrower of each Lender’s determination under this Section no later than the date 20 days prior to the applicable Extension Date (or, if such date is not a Business Day, on the next preceding
Business Day). 
 (d) Additional Commitment Lenders. The Borrower shall have the right to replace each Non-Extending
Lender with, and add as “Lenders” under this Agreement in place thereof, one or more Eligible Assignees (each, an “Additional Commitment Lender”) as provided in Section 3.08; provided that (i) the
Borrower shall offer the Revolving Credit Commitments of Non-Extending Lenders first to Extending Lenders (defined below), it being understood no Extending Lender shall have an obligation to take any such Non-Extending Lender’s Revolving Credit
Commitment, and (ii) each of such Additional Commitment Lenders shall enter into an Assignment and Assumption pursuant to which such Additional Commitment Lender shall, effective as of the applicable Extension Date, undertake a Revolving Credit
Commitment (and, if any such Additional Commitment Lender is already a Lender, its Revolving Credit Commitment shall be in addition to such Lender’s Revolving Credit Commitment hereunder on the date of such assignment). 
 (e) Minimum Extension Requirement. If (and only if) the total of the Revolving Credit Commitments of the Lenders that have agreed
so to extend their Revolving Credit Maturity Date (each, an “Extending Lender”) and the additional Revolving Credit Commitments of the Additional Commitment Lenders shall be more than 50% of the Aggregate Revolving Credit
Commitments in effect immediately prior to the applicable Extension Date, then, effective as of the applicable Extension Date, the Revolving Credit Maturity Date of each Extending Lender and of each Additional Commitment Lender shall be extended to
the date falling one year after the then-existing Revolving Credit Maturity Date (except that, if such date is not a Business Day, such Revolving Credit Maturity Date as so extended shall be the next preceding Business Day) and each Additional
Commitment Lender shall thereupon become a “Lender” for all purposes of this Agreement. 
  

 4 

 (f) Conditions to Effectiveness of Extensions. As a condition precedent to such
extension, the Borrower shall deliver to the Administrative Agent a certificate of each Loan Party dated on or prior to the applicable Extension Date (in sufficient copies for each Extending Lender and each Additional Commitment Lender) signed by a
Responsible Officer of such Loan Party (i) certifying and attaching the resolutions adopted by such Loan Party approving or consenting to such extension and (ii) in the case of the Borrower, certifying that, before and after giving effect
to such extension (A) the representations and warranties contained in Article V and the other Loan Documents are true and correct on and as of the date of such certificate, except to the extent that such representations and warranties
specifically refer to an earlier date, in which case they are true and correct as of such earlier date, and except that for purposes of this Section 2.15, the representations and warranties contained in subsections (a) and
(b) of Section 5.05 shall be deemed to refer to the most recent statements furnished pursuant to subsections (a) and (b), respectively of Section 6.01, and (B) no Default exists. In addition, on the Revolving
Credit Maturity Date of each Non-Extending Lender, the Borrower shall prepay any Revolving Loans outstanding on such date (and pay any additional amounts required pursuant to Section 3.05) to the extent necessary to keep outstanding
Revolving Loans ratable with any revised Pro Rata Shares of the respective Lenders effective as of such date. 
 (g)
Conflicting Provisions. This Section 2.15 shall supersede any provisions in Section 2.13 or 10.01 to the contrary.” 
 (i) Section 3.08 of the Credit Agreement is hereby amended by deleting the “or” immediately prior to clause
(c) thereof, and inserting the following subsection (d) immediately prior to the definition of “Restricted Lender” contained therein: 
 “, or (d) fails to consent to an extension of the Maturity Date properly requested pursuant to Section 2.15” 
 (j) Section 5.15 of the Credit Agreement is hereby amended by replacing the first sentence thereof with the following:

 “As of the Closing Date, the Borrower has disclosed to the Administrative Agent and the Lenders all agreements,
instruments and corporate or other restrictions to which it or any of its Subsidiaries is subject, and all other matters known to it, that, individually or in the aggregate, could reasonably be expected to result in a Material Adverse Effect.”

 (k) The reference in the second parenthetical in the lead-in to Article VI of the Credit Agreement to “Related
Swap Contracts” is hereby replaced with “Related Credit Arrangements” in lieu thereof. 
  

 5 

 (l) The reference in the second parenthetical in the lead-in to Article VII of the
Credit Agreement to “Related Swap Contracts” is hereby replaced with “Related Credit Arrangements” in lieu thereof. 
 (m) Section 7.08 of the Credit Agreement, and the accompanying Schedule 7.08, are hereby deleted in their entirety, without replacement thereof. 
 (n) Section 7.10(a) of the Credit Agreement is hereby amended by inserting the following proviso at the end of such section:

 “; provided that if at any time after the payment in full and termination of the Private Notes, and if at such
time there is no other Indebtedness replacing the Private Notes containing a consolidated net worth covenant, the Debt Rating is either BBB+ or higher by S&P or Baa1 or higher by Moody’s, then in such case this covenant shall at such time
and at all times thereafter cease to apply.” 
 (o) Section 8.01(h) of the Credit Agreement is hereby deleted
in its entirety and replaced with the following: 
 “(h) Judgments. There is entered against the Borrower or any
Subsidiary (i) a final judgment or order for the payment of money in an aggregate amount exceeding the Threshold Amount (to the extent not covered by independent third-party insurance as to which the insurer does not dispute coverage), or
(ii) any one or more non-monetary final judgments that have, or could reasonably be expected to have, individually or in the aggregate, a Material Adverse Effect and, in either case, (A) enforcement proceedings are appropriately commenced
by any creditor upon such judgment or order, or (B) there is a period of ten consecutive days during which either (x) such judgment is not discharged or (y) a stay of enforcement of such judgment, by reason of a pending appeal or
otherwise, is not in effect; or” 
 (p) Section 8.03 of the Credit Agreement is hereby amended by deleting
the paragraphs labeled “Second”, “Third” and “Fourth” therein in their entirety and replacing such paragraphs with the following: 
 “Second, to payment of that portion of the Obligations constituting fees, indemnities and other amounts (other than principal
and interest) payable to the Lenders (including Attorney Costs and amounts payable under Article III), ratably among them in proportion to the amounts described in this clause Second payable to them; 
 Third, to payment of that portion of the Obligations constituting accrued and unpaid interest on the Loans, L/C Borrowings and
other Obligations arising under the Loan Documents, ratably among the Lenders in proportion to the respective amounts described in this clause Third payable to them; 
  

 6 

 Fourth, to payment of that portion of the Obligations constituting unpaid
principal of the Loans, L/C Borrowings and Obligations arising under Related Credit Arrangements, ratably among the Lenders in proportion to the respective amounts described in this clause Fourth held by them;” 
 (q) Section 8.03 of the Credit Agreement is hereby amended by deleting the paragraph labeled “Sixth”
contained therein, without any replacement thereof, and re-labeling the paragraph labeled “Seventh” contained therein as “Sixth” in lieu thereof. 
 (r) Section 8.03 of the Credit Agreement is hereby amended by adding the following paragraph at the end of such section:

 “Notwithstanding the foregoing, Obligations arising under Related Credit Arrangements shall be excluded from the
application described above unless the Administrative Agent has received written notice thereof, together with such supporting documentation as the Administrative Agent may request, from the applicable Lender or Affiliate of Lender, as the case may
be, of (A) the existence of such Related Credit Arrangement, and (B) the sums due to the applicable Lender or Affiliate of a Lender, as the case may be, on the date any such amounts are applied pursuant to this Section 8.03.
Each Affiliate of a Lender not a party to the Credit Agreement who obtains the benefit of the foregoing provision or any collateral by virtue of the provisions hereof or of the Guaranty shall be deemed to have acknowledged and accepted the
appointment of the Administrative Agent pursuant to the terms of Article IX hereof for itself and its Affiliates as if a “Lender” party to the Credit Agreement. 
 2. Amendments to Guaranty. Subject to the terms and conditions set forth herein, the Guaranty is hereby amended as follows: 
 (a) The parenthetical in the initial paragraph of the Guaranty setting forth the definition of “Secured Parties” is hereby
deleted in its entirety and replaced with the following: 
 “(collectively with the Administrative Agent, and certain other Persons
parties to Related Credit Arrangements as more particularly described in Section 19 hereof, the ‘Secured Parties’)” 
 (b) Subpart (c) of the definition of “Borrower’s Liabilities” contained in Section 1 of the Guaranty is hereby deleted in its entirety and replaced with the following: 
 “(c) the prompt payment in full, when due or declared due and at all such times, of obligations and liabilities of the Borrower or any Subsidiary now
or hereafter arising under Related Credit Arrangements.” 
  

 7 

 (c) Subpart (iii) of the definition of “Facility Termination Date”
contained in Section 9(c) of the Guaranty is hereby deleted in its entirety and replaced with the following: 
 “(iii) the
obligations and liabilities of the Borrower and each Subsidiary under all Related Credit Arrangements shall have been fully, finally and irrevocably paid and satisfied in full and the Related Credit Arrangements shall have expired or been
terminated, or other arrangements satisfactory to the counterparties thereto or the providers thereof shall have been made with respect thereto;” 
 (d) Section 19 of the Guaranty is hereby deleted in its entirety and replaced with the following: 
 “19. Related Credit Arrangements. All obligations of the Borrower or any Subsidiary under Related Credit Arrangements to which any Lender or its Affiliates are a party shall be deemed to be Borrower’s
Liabilities, and each Lender or Affiliate of a Lender party to any such Related Credit Arrangement shall be deemed to be a Secured Party hereunder with respect to such Borrower’s Liabilities; provided, however, that such
obligations shall cease to be Borrower’s Liabilities at such time, prior to the Facility Termination Date, as such Person (or Affiliate of such Person) shall cease to be a ‘Lender’ under the Credit Agreement.” 
 (e) The reference in the final recitals to the Guaranty Joinder Agreement, attached as Exhibit A to the Guaranty, to a
“Related Swap Contracts” is hereby amended to refer to “Related Credit Arrangements” in lieu thereof. 
 3.
Effectiveness; Conditions Precedent. The effectiveness of this Agreement and the amendments to the Credit Agreement and the Guaranty herein provided are subject to the satisfaction of the following conditions precedent: 
 (a) the Administrative Agent shall have received each of the following documents or instruments in form and substance reasonably
acceptable to the Administrative Agent: 
 (i) four (4) original counterparts of this Agreement, duly executed by the
Borrower, the Administrative Agent, each Guarantor and each of the Lenders (after giving effect to the provisions of Paragraph 13 of this Agreement); 
 (ii) resolutions of the Board of Directors of the Borrower and of each Guarantor, in each case authorizing the transactions contemplated hereby, certified by the Secretary or Assistant Secretary of Borrower; and

 (iii) such other documents, instruments, opinions, certifications, undertakings, further assurances and other matters as
the Administrative Agent shall reasonably request; and 
  

 8 

 (b) all fees and expenses payable to the Administrative Agent and the Lenders (including
the fees and expenses of counsel to the Administrative Agent and the fees provided in that certain fee letter among Bank of America, Banc of America Securities LLC and the Borrower dated as of April 17, 2007) estimated to date shall have been
paid in full (without prejudice to final settling of accounts for such fees and expenses). 
 4. Consent of the Guarantors. Each
Guarantor hereby consents, acknowledges and agrees to the amendments set forth herein and hereby confirms and ratifies in all respects the Guaranty to which such Guarantor is a party (including without limitation the continuation of such
Guarantor’s payment and performance obligations thereunder upon and after the effectiveness of this Agreement and the amendments contemplated hereby) and the enforceability of such Guaranty against such Guarantor in accordance with its terms.

 5. Representations and Warranties. In order to induce the Administrative Agent and the Lenders to enter into this Agreement, the
Borrower represents and warrants to the Administrative Agent and the Lenders as follows: 
 (a) The representations and
warranties made by the Borrower and each other Loan Party in Article V (other than the representation and warranty in Section 5.05(c)) of the Credit Agreement and in each of the other Loan Documents to which such Loan Party is a
party are true and correct on and as of the date hereof, except to the extent that such representations and warranties expressly relate to an earlier date, and except that the representations and warranties contained in Sections 5.05(a) and
(b) of the Credit Agreement shall be deemed to refer to the most recent statements furnished pursuant to Sections 6.01(a) and (b), respectively; 
 (b) Since the date of the most recent financial reports of the Borrower delivered pursuant to Section 6.01(a) of the Credit
Agreement, there has been no event or circumstance, either individually or in the aggregate, that has had or could reasonably be expected to have a Material Adverse Effect; 
 (c) The Persons appearing as Guarantors on the signature pages to this Agreement constitute all Persons who are required to be Guarantors
pursuant to the terms of the Credit Agreement and the other Loan Documents, including without limitation all Persons who became Subsidiaries or were otherwise required to become Guarantors after the Closing Date, and each of such Persons has become
and remains a party to a Guaranty as a Guarantor; 
 (d) This Agreement has been duly authorized, executed and delivered by
the Borrower and Guarantors party hereto and constitutes a legal, valid and binding obligation of such parties, except as may be limited by general principles of equity or by the effect of any applicable bankruptcy, insolvency, reorganization,
moratorium or similar law affecting creditors’ rights generally; and 
 (e) No Default or Event of Default has occurred
and is continuing. 
 6. Entire Agreement. This Agreement, together with all the Loan Documents (collectively, the
“Relevant Documents”), sets forth the entire understanding and agreement of 

  

 9 

 
the parties hereto in relation to the subject matter hereof and supersedes any prior negotiations and agreements among the parties relating to such subject
matter. No promise, condition, representation or warranty, express or implied, not set forth in the Relevant Documents shall bind any party hereto, and no such party has relied on any such promise, condition, representation or warranty. Each of the
parties hereto acknowledges that, except as otherwise expressly stated in the Relevant Documents, no representations, warranties or commitments, express or implied, have been made by any party to the other in relation to the subject matter hereof or
thereof. None of the terms or conditions of this Agreement may be changed, modified, waived or canceled orally or otherwise, except in writing and in accordance with Section 10.01 of the Credit Agreement. 
 7. Full Force and Effect of Agreement. Except as hereby specifically amended, modified or supplemented, the Credit Agreement, the Guaranty and all
other Loan Documents are hereby confirmed and ratified in all respects and shall be and remain in full force and effect according to their respective terms. 
 8. Counterparts. This Agreement may be executed in any number of counterparts, each of which shall be deemed an original as against any party whose signature appears thereon, and all of which shall together
constitute one and the same instrument. Delivery of an executed counterpart of a signature page to this Agreement by facsimile or electronic format (including .tif or .pdf) shall be effective as delivery of a manually executed counterpart of this
Agreement. 
 9. Governing Law. This Agreement shall in all respects be governed by, and construed in accordance with, the laws of the
State of New York applicable to contracts executed and to be performed entirely within such State, and shall be further subject to the provisions of Sections 10.14 and 10.15 of the Credit Agreement. 
 10. Enforceability. Should any one or more of the provisions of this Agreement be determined to be illegal or unenforceable as to one or more of
the parties hereto, all other provisions nevertheless shall remain effective and binding on the parties hereto. 
 11. References. All
references in any of the Loan Documents to the “Credit Agreement” shall mean the Credit Agreement, as amended hereby. All references in any of the Loan Documents to the “Guaranty” shall mean the Guaranty, as amended hereby.

 12. Successors and Assigns. This Agreement shall be binding upon and inure to the benefit of the Borrower, the Administrative Agent
and each of the Guarantors and Lenders, and their respective successors, legal representatives, and assignees to the extent such assignees are permitted assignees as provided in Section 10.06 of the Credit Agreement. 
 13. Revolving Credit Commitments. With effect from and including the date of the effectiveness of this Agreement in accordance with
Paragraph 3 hereof, the Revolving Credit Commitment of each Lender shall be the amount set forth opposite the name of such Lender on the revised Schedule 1.01(a) to the Credit Agreement set forth on Exhibit A to this Agreement (the
“Revised Allocation Schedule”), which shall replace the existing Schedule 1.01(a) to the Credit Agreement. Any Lender under the Credit Agreement prior to the effectiveness of this Agreement that does not appear on the
Revised Allocation Schedule (each, a “Departing 

  

 10 

 
Lender”) shall, upon the effectiveness of this Agreement in accordance with Paragraph 3 hereof, cease to be a Lender under the Credit
Agreement and all accrued fees and other amounts payable under the Credit Agreement for the account of each Departing Lender (it being understood that as of the date hereof, there are not Outstanding Amounts of Revolving Loans) shall be due and
payable on such date; provided that the provisions of Sections 3.01, 3.04, 3.05 and 10.04 shall continue to inure to the benefit of each Departing Lender with respect to facts and circumstances occurring prior to
the effectiveness of this Agreement as if an assignment had been made pursuant to Section 10.06(b) of the Credit Agreement. 
 [Signature pages follow.] 
  

 11 

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

			
	 BORROWER:

	
	 PRECISION CASTPARTS CORP.

		
	 By:
	 	  

	 Name:
	 	  

	 Title:
	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	GUARANTORS:
	
	PCC STRUCTURALS, INC.
	
	PCC AIRFOILS LLC.
		
	By:	 	Precision Castparts Corp., its sole member
	
	PCC SPECIALTY PRODUCTS, INC.
	
	J&L FIBER SERVICES, INC.
	
	ADVANCED FORMING TECHNOLOGY, INC.
	
	WYMAN-GORDON COMPANY
	
	PRECISION FOUNDERS INC.
	
	WYMAN-GORDON FORGINGS (CLEVELAND), INC.
	
	WYMAN-GORDON FORGINGS, INC.
	
	WYMAN-GORDON INVESTMENT CASTINGS, INC.
	
	SPS TECHNOLOGIES, LLC
		
	By:	 	Precision Castparts Corp., its sole member and sole manager
	
	CARMET INVESTORS, INC.
	
	CARMET COMPANY
	
	WG WASHINGTON STREET LLC
		
	By:	 	Wyman-Gordon Company, its sole member and sole manager
	
	INTERNATIONAL EXTRUDED PRODUCTS, LLC
		
	By:	 	Precision Castparts Corp., its sole member
	
	CANNON-MUSKEGON CORPORATION
	
	GREENVILLE METALS, INC.
	
	GREER STOP NUT, INC.
	
	HOWELL PENNCRAFT, INC.
	
	M. ARGUESO & CO., INC.
	
	METALAC FASTENERS, INC.
	
	NSS TECHNOLOGIES, INC.
	
	SPS INTERNATIONAL INVESTMENT COMPANY
	
	SPS TECHNOLOGIES WATERFORD COMPANY
	
	UNBRAKO, LLC
		
	By:	 	SPS Technologies, LLC, Manager Member
		
	By:	 	Precision Castparts Corp., its sole member and sole manager
	
	AVIBANK MFG., INC.
	
	SPECIAL METALS CORPORATION
	
	HUNTINGTON ALLOYS CORPORATION
	
	A-1 WIRE TECH, INC.
		
	By:	 	  

	Name:	 	  

	Title:	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	 ADMINISTRATIVE AGENT:

	
	 BANK OF AMERICA, N.A., as Administrative Agent

		
	 By:
	 	  

	 Name:
	 	  

	 Title:
	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	 LENDERS:

	
	 BANK OF AMERICA, N.A.

		
	 By:
	 	  

	 Name:
	 	  

	 Title:
	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	 CITIBANK, N.A.

		
	 By:
	 	  

	 Name:
	 	  

	 Title:
	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	 WACHOVIA BANK, NATIONAL ASSOCIATION

		
	 By:
	 	  

	 Name:
	 	  

	 Title:
	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	 MIZUHO CORPORATE BANK (USA)

		
	 By:
	 	  

	 Name:
	 	  

	 Title:
	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	 JPMORGAN CHASE BANK, N.A.

		
	 By:
	 	  

	 Name:
	 	  

	 Title:
	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	KEYBANK NATIONAL ASSOCIATION
		
	By:	 	  

	Name:	 	  

	Title:	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	 PNC BANK NATIONAL ASSOCIATION

		
	 By:
	 	  

	 Name:
	 	  

	 Title:
	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	 SUNTRUST BANK

		
	 By:
	 	  

	 Name:
	 	  

	 Title:
	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	U.S. BANK NATIONAL ASSOCIATION
		
	By:	 	  

	Name:	 	  

	Title:	 	  

		
	By:	 	  

	Name:	 	  

	Title:	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	 WELLS FARGO BANK, N.A.

		
	 By:
	 	  

	 Name:
	 	  

	 Title:
	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	 SOCIÉTÉ GÉNÉRALE

		
	 By:
	 	  

	 Name:
	 	  

	 Title:
	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	 THE BANK OF NEW YORK

		
	 By:
	 	  

	 Name:
	 	  

	 Title:
	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	THE BANK OF NOVA SCOTIA
		
	By:	 	  

	Name:	 	  

	Title:	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	 THE BANK OF TOKYO-MITSUBISHI UFJ, LIMITED

		
	 By:
	 	  

	 Name:
	 	  

	 Title:
	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	UNION BANK OF CALIFORNIA, N.A.
		
	By:	 	  

	Name:	 	  

	Title:	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

			
	 BANK OF CHINA

		
	 By:
	 	  

	 Name:
	 	  

	 Title:
	 	  

  

 Precision Castparts Corp. 
 Amendment No. 4 to Amended and Restated Credit Agreement 
 and Amendment No. 2 to Guaranty Agreement

 Signature Pages 

 EXHIBIT A 
 (to Amendment No. 4 to Credit Agreement and Amendment No. 2 to Guaranty Agreement) 
 Schedule 1.01(a) to Credit Agreement 
 REVOLVING CREDIT COMMITMENTS AND PRO RATA SHARES 
  

							
	 Lender
	  	Revolving Credit
Commitment	  	Pro Rata Share	 
	 Bank of America, N.A.
	  	$	100,000,000	  	10.000000000	%
	 Citibank, N.A.
	  	$	90,000,000	  	9.000000000	%
	 Wachovia Bank, National Association
	  	$	90,000,000	  	9.000000000	%
	 Mizuho Corporate Bank (USA)
	  	$	75,000,000	  	7.500000000	%
	 JPMorgan Chase Bank, N.A.
	  	$	60,000,000	  	6.000000000	%
	 Keybank National Association
	  	$	60,000,000	  	6.000000000	%
	 PNC Bank National Association
	  	$	60,000,000	  	6.000000000	%
	 SunTrust Bank
	  	$	60,000,000	  	6.000000000	%
	 U.S. Bank National Association
	  	$	60,000,000	  	6.000000000	%
	 Wells Fargo Bank, N.A.
	  	$	60,000,000	  	6.000000000	%
	 Société Générale
	  	$	60,000,000	  	6.000000000	%
	 The Bank of New York
	  	$	50,000,000	  	5.000000000	%
	 The Bank of Nova Scotia
	  	$	50,000,000	  	5.000000000	%
	 The Bank of Tokyo-Mitubishi UFJ, Limited
	  	$	50,000,000	  	5.000000000	%
	 Union Bank of California, N.A.
	  	$	50,000,000	  	5.000000000	%
	 Bank of China
	  	$	25,000,000	  	2.500000000	%
		  	 	 	  	 	 
	 Total
	  	$	1,000,000,000	  	100.000000000	%

  

 Revised Schedule 1.01(a) to Credit Agreement

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