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 6145-00-844-3777
NSN 5999-00-115-5843
NSN 5965-01-140-9446
NSN 5935-01-485-2457
NSN 5998-01-049-7257
NSN 6150-00-596-9253
NSN 5945-01-367-1992
NSN 5930-00-914-4344
NSN 5998-01-245-7658
NSN 2925-01-408-9485
NSN 5990-01-090-9312
NSN 5930-00-061-9380