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 5930-01-408-6922
NSN 5930-01-495-7229
NSN 6610-01-368-3269
NSN 6110-01-399-8109
NSN 5996-01-258-8873
NSN 4140-01-630-6479
NSN 5985-00-459-7491
NSN 6110-01-660-8979
NSN 6105-01-311-8228
NSN 5985-01-467-6036
NSN 6135-01-513-3581
NSN 6645-01-267-5505