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 6110-00-837-7903
NSN 4140-01-389-8523
NSN 6110-00-575-9795
NSN 5945-00-529-6058
NSN 5996-01-012-3267
NSN 6150-00-148-6945
NSN 6150-00-956-5836
NSN 6650-01-050-5974
NSN 5950-00-266-9058
NSN 6135-00-128-1633
NSN 6240-01-616-6813
NSN 5915-01-563-4161