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 6145-01-140-6826
NSN 6110-01-594-1864
NSN 6240-01-358-8857
NSN 5835-01-367-4330
NSN 6685-00-520-4767
NSN 6110-00-435-5923
NSN 5910-00-677-3165
NSN 5915-01-434-5094
NSN 5935-01-274-1639
NSN 6650-01-435-2994
NSN 5960-01-447-7074
NSN 5930-01-011-1287