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 5975-00-269-4365
NSN 6135-00-112-8637
NSN 6685-01-360-7367
NSN 2925-01-565-6410
NSN 6150-00-907-9324
NSN 6130-01-464-0128
NSN 5930-01-070-4268
NSN 6240-01-187-6536
NSN 5990-00-419-0236
NSN 5855-01-259-8376
NSN 6650-01-282-8015
NSN 5895-00-209-2554