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 5895-00-596-8678
NSN 5905-01-284-1778
NSN 5975-00-507-8884
NSN 5915-01-028-6880
NSN 6320-00-336-5570
NSN 6135-01-411-3212
NSN 5998-01-509-7156
NSN 6135-01-434-6308
NSN 5960-00-221-9614
NSN 6650-01-262-7296
NSN 5935-00-795-7460
NSN 5996-01-567-2315