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 6320-00-513-8376
NSN 6685-01-577-4866
NSN 5945-00-596-2665
NSN 6145-01-587-9455
NSN 5895-00-494-8589
NSN 5998-01-378-4322
NSN 5935-01-159-3195
NSN 6145-01-041-3057
NSN 6110-01-165-6844
NSN 6145-00-291-5388
NSN 6685-00-860-9544
NSN 5895-00-013-9312