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 5835-00-985-1444
NSN 5990-00-988-1690
NSN 6105-01-420-1019
NSN 5930-00-482-5780
NSN 5996-01-467-2177
NSN 6650-01-050-8680
NSN 4140-00-067-2590
NSN 6130-00-075-2202
NSN 7035-01-501-5938
NSN 5935-01-070-6947
NSN 6130-01-546-9882
NSN 5905-01-322-1591