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 6610-01-080-8064
NSN 4140-00-989-3257
NSN 6150-01-210-3423
NSN 6145-01-073-1509
NSN 5985-01-154-0612
NSN 6130-01-660-5742
NSN 5985-01-593-7253
NSN 5920-01-119-3652
NSN 6620-01-441-7896
NSN 2925-01-346-9522
NSN 6610-00-913-7069
NSN 6610-01-381-0652