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 6620-01-021-8906
NSN 5985-01-383-1572
NSN 5975-00-782-6389
NSN 5920-01-498-0847
NSN 6650-01-501-1825
NSN 2925-01-101-4655
NSN 5915-01-157-9579
NSN 6650-00-026-8139
NSN 5965-01-352-0961
NSN 6150-00-201-9583
NSN 5930-00-833-2280
NSN 6110-01-512-8742