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 6650-01-129-2886
NSN 6610-01-475-1921
NSN 5920-00-387-5312
NSN 6685-01-484-5552
NSN 6620-01-643-5531
NSN 6110-01-090-0417
NSN 2925-00-084-3765
NSN 5945-00-111-1663
NSN 2925-01-511-2667
NSN 5915-01-633-9845
NSN 5985-00-277-2423
NSN 6145-01-506-9814