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 5985-00-777-4211
NSN 6145-00-904-3811
NSN 5950-01-486-5383
NSN 5985-01-310-2255
NSN 5930-01-436-1193
NSN 5915-01-355-0391
NSN 5945-01-634-0588
NSN 5925-01-351-3660
NSN 5925-00-231-3660
NSN 5915-01-237-7865
NSN 6130-00-402-7346
NSN 5945-00-837-6595