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 6645-00-151-5280
NSN 5855-01-037-7342
NSN 6685-01-282-3017
NSN 5920-01-338-3489
NSN 5999-00-740-8259
NSN 6110-01-268-9325
NSN 6220-01-117-7619
NSN 5999-01-311-1361
NSN 6685-00-762-1094
NSN 6320-01-378-6191
NSN 5998-00-686-2152
NSN 5895-01-041-8912