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 5925-00-249-1287
NSN 6150-01-498-9401
NSN 5996-00-122-3788
NSN 5990-00-436-9008
NSN 6135-01-430-3119
NSN 6650-01-506-0386
NSN 5985-01-350-2945
NSN 5930-01-575-5107
NSN 6320-00-089-9426
NSN 5965-01-528-8152
NSN 5915-01-250-4898
NSN 5855-01-503-0775