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 5999-01-413-3549
NSN 2925-00-909-2596
NSN 5935-01-362-3225
NSN 7035-00-054-1057
NSN 5998-01-081-4923
NSN 6645-01-605-4351
NSN 6240-01-564-0795
NSN 6620-01-106-6510
NSN 6320-01-513-9166
NSN 2925-01-041-8201
NSN 5905-01-392-3091
NSN 6145-01-576-9609