A washer, round in shape, having a centrally located hole. One bearing surface is flat, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. Either or both of the bearing surfaces must be broken by a counterbore, countersink, or similar shaped recess. The thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. For items having a shoulder (boss) of greater thickness, use bearing, sleeve; bushing, sleeve; or spacer, sleeve. Excludes insulator, washer and thrust type washers.
Classification: Cotters, cotter-pins, washers and similar articles, of aluminum
NSN 5930-00-266-8175
NSN 6135-01-163-0332
NSN 5950-00-594-8327
NSN 5998-01-542-5903
NSN 5950-01-605-3014
NSN 6105-01-290-4738
NSN 6130-00-553-1946
NSN 5945-01-159-3704
NSN 6150-01-314-8588
NSN 6240-01-157-2935
NSN 6650-01-241-1269
NSN 5905-00-435-4609