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 5925-01-197-9899
NSN 6685-00-363-1701
NSN 6650-00-925-3779
NSN 5930-00-159-0843
NSN 5965-01-154-4524
NSN 6650-01-444-2152
NSN 5930-00-936-3926
NSN 5998-01-565-2943
NSN 5999-01-044-6063
NSN 2925-01-099-7075
NSN 6240-01-421-9388
NSN 6320-01-495-6893