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 5965-00-362-2158
NSN 6685-01-540-8550
NSN 6135-00-603-4859
NSN 5960-01-438-0245
NSN 4140-01-465-6476
NSN 6105-01-555-4426
NSN 5905-01-482-2338
NSN 5910-00-487-3906
NSN 5999-00-827-0703
NSN 5996-01-388-4412
NSN 5985-01-277-9650
NSN 5855-01-597-4404