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 5990-00-827-0684
NSN 5950-00-115-7143
NSN 5910-01-560-4230
NSN 6135-01-329-7994
NSN 5965-01-320-9742
NSN 5965-00-153-5216
NSN 6320-01-454-1965
NSN 6220-00-226-1994
NSN 5965-01-205-6249
NSN 6110-00-092-5116
NSN 5999-01-158-0289
NSN 6320-00-456-2092