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 5996-01-440-0634
NSN 5960-00-032-9715
NSN 5998-00-434-5081
NSN 6110-01-531-4188
NSN 6145-00-269-4271
NSN 6685-01-083-0504
NSN 6135-01-299-0778
NSN 5905-01-299-1670
NSN 6240-00-138-0654
NSN 6645-01-463-4314
NSN 6320-00-405-2348
NSN 6620-01-581-5301