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 6220-01-365-9048
NSN 6145-01-631-5353
NSN 5999-01-501-5043
NSN 6320-01-425-1417
NSN 6685-00-450-7013
NSN 6645-01-176-6866
NSN 6685-01-515-4305
NSN 7035-00-553-6951
NSN 6610-01-384-1587
NSN 5930-01-462-6557
NSN 6320-01-573-2394
NSN 4140-01-580-0277