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 6240-01-119-5978
NSN 6645-01-099-6887
NSN 5950-01-532-3743
NSN 6645-01-162-8023
NSN 5999-01-094-3723
NSN 6220-01-413-9843
NSN 7035-00-371-7749
NSN 4140-01-202-5600
NSN 7035-01-583-9124
NSN 5945-00-833-6606
NSN 6110-00-111-1225
NSN 6645-01-142-1707