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 5990-01-344-7778
NSN 5990-01-378-7349
NSN 5965-00-920-0455
NSN 6610-01-202-1373
NSN 6220-01-130-6632
NSN 6220-01-437-6820
NSN 5945-00-754-3722
NSN 5895-01-437-6414
NSN 5960-01-481-3722
NSN 5935-01-467-3320
NSN 5960-01-340-3072
NSN 5996-01-008-9948