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 6145-01-496-8616
NSN 5996-01-463-7904
NSN 6135-00-728-9860
NSN 6110-01-374-6640
NSN 4140-00-703-3207
NSN 6620-01-082-2483
NSN 6620-00-435-5205
NSN 6135-01-462-6040
NSN 6650-01-089-7777
NSN 5935-00-472-4440
NSN 5960-01-030-5345
NSN 5965-00-471-5018