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 6110-00-489-0828
NSN 5945-01-352-5852
NSN 6610-01-513-3233
NSN 5960-01-258-5615
NSN 6685-01-508-7325
NSN 5999-01-386-0425
NSN 6130-00-925-2303
NSN 6650-01-422-7106
NSN 5965-01-222-2613
NSN 6240-01-222-9632
NSN 5910-01-633-9963
NSN 5990-00-874-3036