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 6135-00-221-4720
NSN 6240-00-850-1407
NSN 5996-00-218-1123
NSN 5935-01-394-2054
NSN 6610-01-591-4374
NSN 5960-01-485-0437
NSN 5998-01-452-4147
NSN 5960-00-908-2416
NSN 6610-01-223-3194
NSN 5985-01-253-6851
NSN 6130-00-135-2979
NSN 7035-01-588-4127