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 6320-01-392-3531
NSN 5996-00-967-3647
NSN 6320-01-544-6447
NSN 5915-01-519-3287
NSN 6130-01-036-6591
NSN 6650-01-352-0424
NSN 6130-01-014-1365
NSN 5925-01-151-1448
NSN 5935-01-397-5211
NSN 5935-01-600-1919
NSN 5905-00-008-4594
NSN 6135-01-566-1034