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 5895-00-862-5564
NSN 5985-00-580-4760
NSN 5999-01-279-9827
NSN 5985-01-327-3017
NSN 6240-00-946-4900
NSN 6645-01-375-7401
NSN 4140-00-090-4174
NSN 6620-01-122-0238
NSN 4140-00-078-9357
NSN 5895-00-525-3295
NSN 5985-00-906-6837
NSN 2925-01-547-4565