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 6130-00-113-8291
NSN 6320-01-323-1947
NSN 6610-01-392-1701
NSN 5905-01-068-4582
NSN 5835-01-485-0210
NSN 6105-01-441-9312
NSN 4140-00-982-9643
NSN 7035-01-322-8180
NSN 6650-01-658-4145
NSN 5945-01-513-9686
NSN 6220-01-468-7715
NSN 7035-01-340-3272