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 5965-01-089-8579
NSN 6650-01-090-0239
NSN 5975-01-616-5874
NSN 5935-01-313-8404
NSN 6620-01-063-1441
NSN 4140-00-448-4306
NSN 5905-01-532-9102
NSN 6620-00-254-8985
NSN 6105-01-029-8695
NSN 5920-01-085-2234
NSN 6110-01-364-7009
NSN 5855-00-288-1408