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 6150-00-596-9253
NSN 6150-00-460-0564
NSN 4140-01-367-5824
NSN 5985-00-055-5632
NSN 6145-01-121-0466
NSN 6650-01-388-3387
NSN 6150-01-028-4937
NSN 5915-01-641-8953
NSN 6105-01-528-9394
NSN 5945-01-544-7640
NSN 5960-01-237-2336
NSN 6650-00-717-8913