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 6105-00-248-5772
NSN 5835-01-471-5848
NSN 2925-01-503-6792
NSN 6105-01-201-9264
NSN 5920-00-569-6435
NSN 5905-01-395-4035
NSN 5999-01-162-4241
NSN 5985-00-982-0370
NSN 5910-00-870-7381
NSN 6110-01-166-2561
NSN 5999-00-994-6658
NSN 6220-00-912-0226