EXHIBIT 4.2 FIFTH AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT This Fifth Amendment to Amended and Restated Credit Agreement (the "AMENDMENT") dated as of December 21, 1999 among Atchison Casting Corporation (the "BORROWER"), the Banks, and Harris Trust and Savings Bank, as Agent; W I T N E S S E T H: WHEREAS, the Borrower, Guarantors, Banks and Harris Trust and Savings Bank, as Agent, have heretofore executed and delivered an Amended and Restated Credit Agreement dated as of April 3, 1998 (as amended through the Fourth Amendment thereto dated November 5, 1999, the "CREDIT AGREEMENT"); and WHEREAS, the parties hereto desire to amend the Credit Agreement as provided herein; NOW, THEREFORE, for good and valuable consideration the receipt and sufficiency of which is hereby acknowledged, the parties hereto agree that the Credit Agreement shall be and hereby is amended as follows: 1. The definition of "FIXED CHARGES" appearing in Section 4.1 of the Credit Agreement is hereby amended in its entirety and as so amended shall read as follows: "FIXED CHARGES" means, as applied to any Person for any period, the sum of (a) Interest Expense of such Person for such period, PLUS (b) the aggregate amount of Current Maturities required to be made by the Borrower and its Subsidiaries PLUS (c) 15% of the aggregate principal amount of Revolving Loans outstanding on the last day of such period; provided that if the Borrower obtains a commitment from General Electric Capital Corporation in form and substance acceptable to the Required Banks by no later than December 22, 1999 to extend to the Borrower the GE Financing (as hereinafter defined) on or prior to January 31, 2000, clause (c) shall only be effective from and after July 1, 2000; PROVIDED FURTHER that if GE Capital Corporation does not advance the GE Financing on or prior to January 31, 2000, clause (c) above shall be effective for all calculations at all times after October 1, 1999. 2. Section 1.14 to the Credit Agreement is hereby amended in its entirety to read as follows: SECTION 1.14. INCREASE IN COMMITMENTS. On or prior to January 31, 2000, the Borrower shall have the right to increase the Commitments up to an additional $10,000,000 (in a minimum amount of $5,000,000 and integral multiples of $1,000,000 in excess thereof) on a percentage basis for each of the Banks in accordance with the amount of their Temporary Commitment Percentage upon three Business Days' prior written notice to the Agent PROVIDED THAT: (i) the Borrower may exercise its rights to increase the Commitments pursuant to this Section 1.14 only one time, (ii) no Default or Event of Default shall have occurred and be continuing on the date of such increase or would result from such increase, (iii) on the date of such increase the Borrower shall have repaid in full the outstanding Term Loans from the proceeds of the GE Financing and other funds available to the Borrower, and (iv) the increase in Commitments to become effective on such date shall be in an aggregate amount not to exceed $10,000,000. Upon the satisfaction of the foregoing provisions, the Commitments shall, without any further action on the part of the Borrower or any Bank, be deemed amended to reflect the increase as provided in this Section 1.14. Any increase in the Commitments pursuant to this Section 1.14 shall, notwithstanding anything in the Credit Agreement to the contrary, automatically terminate on April 30, 2000. Notwithstanding the provisions of Section 3.1 hereof or any other provision of the Credit Agreement to the contrary, if and so long as no Event of Default under Section 8.1(a) has occurred and is continuing and the aggregate principal amount oustanding under the Credit Agreement exceeds $70,000,000, each payment of the principal amount of any Loan or unreimbursed drawing on a Letter of Credit shall first be applied to repay the Banks that have increased their Commitments pursuant to this Section 1.14 ratably that portion (if any) of the outstanding Loans and unpaid reimbursement obligations on Letters of Credit that exceeds $70,000,000. Otherwise, all payments shall be applied PRO RATA in accordance with the provisions of Section 3.1. As used in this Section 1.14 "TEMPORARY COMMITMENT PERCENTAGE" for each Bank shall mean the percentage set forth opposite such Bank's name below: Harris Trust and Savings Bank 38.63636364% Commerce Bank, N.A. 13. 63636364% Mercantile Bank 13. 63636364% KeyBank National Association 0.00% Comerica Bank 9.09090909% Hibernia National Bank 9.09090909% National Westminster Bank Plc 9.09090909% Norwest Bank Minnesota, N.A. 6.81818181% 3. Section 7.16 of the Credit Agreement is hereby amended by: (i) re-lettering subclause (c) as new subclause "(d)" and (ii) adding new subclause (c) as follows: (c) indebtedness for borrowed money of the Borrower in an aggregate principal amount anytime outstanding not exceeding $35,000,000 advanced by General Electric Capital -2- Corporation or its assignees pursuant to documentation acceptable to the Required Banks (the "GE FINANCING"). 4. Section 7.9 of the Credit Agreement is hereby amended by: (a) re-lettering subclause (g) thereof as new subclause "(h)" and (ii) inserting new subclause (g) as follows: (g) Liens upon certain fixed assets, real estate, equipment, furniture and fixtures of the Borrower as approved by the Required Banks located in Atchison, Kansas and St. Joseph, Missouri securing the GE Financing. 5. Schedule 5.6(a) to the Credit Agreement is hereby amended in its entirety to read as Schedule 5.6(a) attached to this Amendment. 6. Notwithstanding paragraph 8 of the Fourth Amendment to the Credit Agreement, the Banks agree that: (i) the Borrower need only deliver as collateral non-real estate assets located in the United States or Canada, (ii) the Banks will not take as collateral certain fixed assets, real estate, equipment, furniture and fixtures (to be approved by the Required Banks) of the Borrower located in Atchison, Kansas and St. Joseph, Missouri to the extent such assets are pledged to secure the GE Financing and the Term Loans have been repaid with the proceeds of the GE Financing and other funds available to the Borrower, and (iii) the Borrower will deliver security interests in such real estate of the Borrower and its Subsidiaries located in the United States or Canada as the Required Banks may request from time to time other than the real estate of the Borrower located in Atchison, Kansas and St. Joseph, Missouri commonly known as the Atchison Foundry and St. Joseph Machine Shop. All other assets of the Borrower and any Subsidiary of the Borrower would remain subject to the negative pledge contained in Section 7.16 of the Credit Agreement. 7. The Borrower represents and warrants to each Bank and the Agent that (a) each of the representations and warranties set forth in Section 5 of the Credit Agreement (as updated pursuant to this Amendment) is true and correct on and as of the date of this Amendment as if made on and as of the date hereof and as if each reference therein to the Credit Agreement referred to the Credit Agreement as amended hereby; (b) after giving effect to this Amendment, no Default and no Event of Default has occurred and is continuing; and (c) without limiting the effect of the foregoing, the Borrower's execution, delivery and performance of this Amendment have been duly authorized, and this Amendment has been executed and delivered by duly authorized officers of the Borrower. 8. This Amendment shall become effective when the Borrower, the Required Banks, and the Agent shall have executed and delivered this Amendment and the Guarantors shall have executed the consent attached hereto. This Amendment may be executed in any number of counterparts and by different parties hereto on separate counterpart signature pages, each of which when so executed shall be an original but all of which shall constitute one and the same instrument. Except as specifically amended and modified hereby, all of the terms and conditions of the Credit Agreement and the -3- other Credit Documents shall remain unchanged and in full force and effect. All references to the Credit Agreement in any document shall be deemed to be references to the Credit Agreement as amended hereby. All capitalized terms used herein without definition shall have the same meaning herein as they have in the Credit Agreement. This Amendment shall be construed and governed by and in accordance with the internal laws of the State of Illinois. -4- Dated as of the date first above written. ATCHISON CASTING CORPORATION By: /s/ Kevin T. McDeremd ------------------------------------------- Title: V.P. & Treasurer ---------------------------------------- HARRIS TRUST AND SAVINGS BANK, in its individual capacity as a Bank and as Agent By: /s/ Len E. Meyer ------------------------------------------- Title: Vice President ---------------------------------------- COMMERCE BANK, N.A. By: /s/ Dennis R. Block ------------------------------------------- Title: Senior Vice President ---------------------------------------- MERCANTILE BANK By: /s/ Barry P. Sullivan ------------------------------------------- Title: Vice President ---------------------------------------- KEY BANK NATIONAL ASSOCIATION By: /s/ Lawrence A. Mack ------------------------------------------- Title: Senior Vice President ---------------------------------------- -5- COMERICA BANK By: /s/ Jeffrey E. Peck ------------------------------------------- Title: Vice President ---------------------------------------- HIBERNIA NATIONAL BANK By: /s/ Troy J. Villafarro ------------------------------------------- Title: Senior Vice President ---------------------------------------- NATIONAL WESTMINSTER BANK PLC Nassau Branch By: /s/ C. A. Parsons ------------------------------------------- Title: Corporate Director ---------------------------------------- New York Branch By: /s/ C. A. Parsons ------------------------------------------- Title: Corporate Director ---------------------------------------- NORWEST BANK MINNESOTA, N.A. By: /s/ R. Duncan Sinclair ------------------------------------------- Title: Vice President ---------------------------------------- -6-