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 5855-01-293-1592
NSN 6150-01-070-2391
NSN 6685-00-690-1147
NSN 6240-00-099-8606
NSN 6610-01-262-3467
NSN 6610-01-112-8137
NSN 4140-01-182-2305
NSN 6620-00-071-8778
NSN 5920-01-091-0123
NSN 6220-01-555-8332
NSN 5910-01-101-1670
NSN 5920-00-011-4995