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 6620-00-269-5168
NSN 5960-00-987-1897
NSN 6110-00-269-2696
NSN 6130-01-348-5919
NSN 5925-01-285-0401
NSN 5920-00-960-7614
NSN 5999-01-487-6103
NSN 5945-01-458-4923
NSN 2925-01-495-1178
NSN 5990-01-195-3693
NSN 6610-00-564-6759
NSN 6650-01-408-5089