Used on m1 tank family. 2.815" hole diameter 3.125" outside diameter 0.025" material thickness 3 waves; 0.062 working height 8.9 lb load at working height; item used on XM1 spring tension
0.639" hole diameter 0.950" outside diameter 0.235" material thickness countersink to 0.700 in. dia by 90 deg, side opposite convex surface passivate surface treated convex
0.514" hole diameter 0.950" outside diameter 0.235" material thickness countersink to 0.550 in. dia by 90 deg, side opposite convex surface passivate surface treated convex