1nickel alloy per ams5580 or 5540; 0.044 - 0.054 in. Thk stock; 0.680 - 0.690 in. Id one end crimped 0.03 in. Max, hole through wall 0.062 in. Nom diameter 0.375 in. End-to-cen; 0.580 - 0.590 in. Id other end cut back 45 degrees angle from 1.50 in. Nom lg