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 6135-00-073-8939
NSN 6320-01-358-0141
NSN 5975-01-592-2288
NSN 5855-01-003-7102
NSN 5910-00-392-1942
NSN 6650-00-098-6128
NSN 5975-01-580-6310
NSN 6650-01-451-1372
NSN 5990-01-485-0260
NSN 5960-00-379-4452
NSN 5975-01-623-6826
NSN 6130-01-503-4909