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 5855-00-145-3307
NSN 5965-00-452-0967
NSN 6130-01-430-3686
NSN 5915-01-481-5042
NSN 6220-01-223-7749
NSN 5990-01-022-6592
NSN 5945-00-686-1534
NSN 5915-00-341-6505
NSN 6620-01-649-7511
NSN 5998-01-083-1089
NSN 5950-01-541-5016
NSN 5950-01-023-0805