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 6135-00-461-3590
NSN 5945-01-597-6305
NSN 5935-01-019-3489
NSN 6650-01-032-1786
NSN 6685-01-501-1390
NSN 5999-01-179-5773
NSN 4140-00-307-2732
NSN 5930-00-837-6694
NSN 5895-01-381-6043
NSN 5990-00-001-4570
NSN 5920-00-403-9642
NSN 6650-01-506-0386