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 5915-01-461-3089
NSN 5985-01-502-6298
NSN 5999-01-345-5514
NSN 6240-01-562-6938
NSN 4140-01-422-4223
NSN 6650-01-605-8157
NSN 6135-01-384-4395
NSN 5985-01-623-7709
NSN 2925-00-215-4954
NSN 5920-01-424-2704
NSN 6650-00-466-1697
NSN 5895-01-279-8973