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 7035-01-502-3830
NSN 6320-00-564-2772
NSN 6135-01-278-9717
NSN 6620-01-352-5640
NSN 6645-00-664-4665
NSN 5920-00-948-9071
NSN 6110-00-252-6480
NSN 5930-01-352-9744
NSN 6220-01-334-6975
NSN 5960-00-157-1383
NSN 6620-01-426-2220
NSN 2925-00-964-7128