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 5895-00-511-7194
NSN 5996-01-519-3330
NSN 5975-01-110-7686
NSN 5999-01-444-4068
NSN 5960-01-068-4003
NSN 6110-01-243-8780
NSN 5920-01-291-7672
NSN 5910-00-413-2630
NSN 4140-00-466-9268
NSN 5895-01-083-8249
NSN 6130-01-054-2139
NSN 6620-01-434-6538