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 2925-01-353-2432
NSN 6150-01-461-1652
NSN 5975-01-363-4610
NSN 6650-00-970-8110
NSN 7035-00-541-8516
NSN 4140-00-205-6491
NSN 5935-01-229-9330
NSN 5999-01-472-3618
NSN 5935-01-106-4531
NSN 6105-01-508-3471
NSN 5999-01-166-9104
NSN 5855-01-103-8650