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 6110-01-379-8027
NSN 6110-01-469-7980
NSN 5998-01-326-0256
NSN 6145-01-561-5249
NSN 5975-00-109-5370
NSN 5950-01-111-0536
NSN 5990-01-612-5323
NSN 4140-01-632-8177
NSN 6110-01-031-7185
NSN 6650-01-514-8701
NSN 6145-01-006-6984
NSN 6220-01-158-5956