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 6240-01-563-1969
NSN 5950-00-996-3042
NSN 5985-01-064-0857
NSN 5935-01-026-9082
NSN 5990-00-162-7273
NSN 5915-00-466-2840
NSN 4140-01-442-9150
NSN 6130-00-243-5284
NSN 6110-01-540-4848
NSN 6105-01-011-0697
NSN 5905-01-182-9293
NSN 6150-00-728-9764