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 6610-01-461-8180
NSN 5910-01-459-2669
NSN 2925-01-512-4682
NSN 6110-01-289-8170
NSN 5910-01-264-5259
NSN 5990-01-641-0068
NSN 6645-00-580-9605
NSN 6105-00-457-7134
NSN 6110-00-596-9124
NSN 6645-01-295-7248
NSN 5950-00-020-6790
NSN 5950-01-240-4691