EXHIBIT - 4a CONSENT The undersigned parties hereby consent to the extension of the maturity date of the Second Amended and Restated Revolving Credit Agreement dated as of July 15, 1994, by and among Kaman Corporation and the undersigned parties (the "Agreement") in accordance with Section 1.20 thereof for an additional one year period from July 15, 1999 to July 15, 2000 as requested by Kaman Corporation in its letter of March 16, 1995. SHAWMUT BANK CONNECTICUT, N.A. By: Jeffrey C. Lynch THE FIRST NATIONAL BANK OF BOSTON By: Harvey H. Thayer, Jr. BANK OF AMERICA NATIONAL TRUST AND SAVINGS ASSOCIATION By: John W. Pocalyko NATIONSBANK, N.A. (CAROLINAS) By: Christopher C. Browder PAGE