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 5835-00-233-6327
NSN 5985-00-235-8899
NSN 5975-00-259-0267
NSN 6645-00-673-0337
NSN 5999-00-387-5510
NSN 5950-01-015-8858
NSN 5930-00-686-5849
NSN 6610-00-388-9188
NSN 5935-00-033-7694
NSN 5985-01-462-1670
NSN 5975-00-760-1285
NSN 5998-00-671-1242