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 6650-01-158-6888
NSN 6320-00-004-9158
NSN 6145-01-200-7075
NSN 6650-01-145-3731
NSN 6150-00-241-9676
NSN 5950-01-618-9387
NSN 5990-01-408-6554
NSN 5910-01-542-8237
NSN 5835-01-604-7489
NSN 6620-01-485-0556
NSN 6105-00-187-0094
NSN 6105-00-995-8195