Used on mrap - common nsn - 3 mrap variants and 19 other weapon systems; mrap - cougar. 0.625" hole diameter 9/16"uss zinc plated thru hard high strength flat washer zinc surface treated
Used on mrap - unique nsn - 3 mrap variants. 21.165mm hole diameter 20mm id x 37mm od din 125 zinc flat washer 20mm id x 37mm od din 125 zinc flat washer zinc surface treated
Used on mrap - unique nsn - maxxpro cat i. 0.646" hole diameter washer, flat or special material steel-1040 to 1065, navistar spec a-0, part 1; heat treat-quench