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 5905-00-920-7101
NSN 2925-01-243-0328
NSN 5930-01-399-4580
NSN 6610-01-036-4525
NSN 5945-01-484-8990
NSN 5910-00-928-1646
NSN 5835-01-592-2350
NSN 5930-01-235-9745
NSN 5930-01-619-1055
NSN 6105-01-190-0874
NSN 6240-01-100-4158
NSN 6650-00-276-9838