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 5965-00-147-3070
NSN 5915-01-204-1763
NSN 6145-00-299-7757
NSN 5895-00-585-2038
NSN 6130-01-448-8713
NSN 6620-01-430-9608
NSN 5945-00-642-5755
NSN 6110-00-470-4696
NSN 5990-00-510-2098
NSN 5925-01-117-6277
NSN 5895-01-156-8142
NSN 6130-01-607-7240