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 2925-00-953-2920
NSN 5985-01-120-7821
NSN 5950-00-156-2220
NSN 5950-00-277-4701
NSN 5910-01-043-8066
NSN 5935-01-115-3506
NSN 5990-01-571-7468
NSN 5915-01-176-1485
NSN 2925-01-132-5827
NSN 5985-01-523-5367
NSN 5945-01-008-8333
NSN 6240-01-226-2902