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 5975-01-582-7829
NSN 6130-00-150-2372
NSN 6320-00-004-9158
NSN 6130-01-146-4687
NSN 5895-01-145-5986
NSN 5960-01-109-7377
NSN 5998-01-503-1379
NSN 5930-00-917-9594
NSN 5895-01-079-1739
NSN 6220-01-044-5552
NSN 5930-01-492-2950
NSN 5999-01-308-6720