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 6145-00-291-5388
NSN 5990-00-050-7693
NSN 6645-01-589-0840
NSN 5935-01-545-6813
NSN 5975-01-050-0564
NSN 6645-01-331-5674
NSN 6610-01-534-5312
NSN 7035-01-512-1826
NSN 6620-01-178-7838
NSN 5960-01-165-1956
NSN 6620-00-555-3992
NSN 7035-00-205-1932