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 6240-01-582-7155
NSN 5935-00-925-1847
NSN 6135-01-578-8919
NSN 6135-01-039-2882
NSN 5998-01-180-0549
NSN 6620-00-481-4210
NSN 5945-01-293-5042
NSN 5950-00-278-1201
NSN 6150-01-650-6540
NSN 2925-01-169-6196
NSN 5920-00-937-3713
NSN 5930-00-543-2691