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 5960-01-424-1781
NSN 6240-00-997-4559
NSN 5999-01-507-1936
NSN 6105-01-289-3942
NSN 5990-01-278-9985
NSN 6645-01-400-1383
NSN 5965-01-187-4008
NSN 5990-00-683-1095
NSN 5895-01-617-2266
NSN 5915-00-636-9785
NSN 5905-01-542-2936
NSN 5965-01-386-2988