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 6220-00-739-1799
NSN 6650-01-448-7820
NSN 5975-01-293-0750
NSN 6105-01-473-7499
NSN 5910-01-599-4944
NSN 4140-00-170-5152
NSN 6105-01-444-3849
NSN 5985-01-205-2045
NSN 5985-01-634-0635
NSN 6645-00-951-0687
NSN 5895-01-509-0923
NSN 5960-01-353-3302