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 5925-01-364-0771
NSN 6110-01-268-0418
NSN 6320-00-445-1187
NSN 5910-00-844-9694
NSN 5996-01-411-6195
NSN 6150-01-197-2833
NSN 6220-01-515-7586
NSN 6240-00-409-5833
NSN 6105-01-416-0674
NSN 6650-01-454-6878
NSN 5999-01-128-2184
NSN 7035-00-104-7613