Rivet Washer, Washer Shape Round, Steel, Fastener Finish Plain, Washer Inside Dia. 1/8 in, Washer Outside Dia. 3/8 in, Washer Thickness 0.056 in, Rivet Washer, Thickness Tolerance 0.052 in to 0.060 in, For Use With Rivets, Package Quantity 500