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 5996-01-463-3152
NSN 5999-01-641-2571
NSN 5835-01-574-0080
NSN 5965-01-406-4164
NSN 5920-00-896-7348
NSN 5998-01-493-2609
NSN 2925-01-348-5518
NSN 5920-01-614-0924
NSN 6240-00-494-0927
NSN 5925-01-308-7450
NSN 5905-00-415-4555
NSN 6130-00-352-2317