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 6130-00-135-3376
NSN 6620-01-601-7491
NSN 6320-01-493-4472
NSN 6135-00-284-1406
NSN 4140-01-263-2180
NSN 5945-00-472-3558
NSN 5895-01-007-9414
NSN 6620-00-253-6329
NSN 6645-01-283-5387
NSN 5999-00-917-4417
NSN 6620-01-068-4498
NSN 5930-01-358-7243