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 5855-01-329-6087
NSN 7035-01-523-6601
NSN 6110-01-481-5826
NSN 5965-01-603-7488
NSN 6610-01-120-7670
NSN 4140-01-578-4112
NSN 6645-00-979-0039
NSN 6610-00-931-3656
NSN 6135-01-310-9866
NSN 5945-00-204-9949
NSN 5996-01-067-6730
NSN 5990-01-129-7701