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 5915-01-265-8357
NSN 5855-00-304-7163
NSN 5920-00-172-5282
NSN 6240-01-429-9002
NSN 6320-01-459-6992
NSN 6135-01-079-7852
NSN 6135-01-438-0228
NSN 6130-00-495-2679
NSN 6620-00-930-5680
NSN 6320-01-643-0850
NSN 6650-01-272-9746
NSN 5975-01-067-2360