A washer or cone or disk shape with a centrally located hole, designed to accommodate a flat or oval head screw and provide additional bearing area on the material being fastened. It may or may not have a flush flange feature.
Classification: Copper washers including spring washers not threaded
NSN 7035-01-232-2657
NSN 5895-01-459-8632
NSN 5920-01-359-8720
NSN 5910-00-782-4950
NSN 5930-01-507-2891
NSN 6130-01-550-3634
NSN 6240-01-334-6961
NSN 6130-01-368-9442
NSN 6150-00-763-3246
NSN 6685-01-199-9943
NSN 6220-01-316-8357
NSN 6110-01-034-1687