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 5985-01-275-9494
NSN 6130-01-630-8777
NSN 5999-00-328-8943
NSN 6135-00-990-1822
NSN 5996-01-466-4577
NSN 2925-01-032-3814
NSN 5960-01-184-3436
NSN 5895-01-323-1518
NSN 4140-01-121-0876
NSN 6220-01-028-4488
NSN 5910-01-223-4035
NSN 6610-01-061-1875