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 5998-01-623-4796
NSN 6645-01-497-4555
NSN 6645-01-450-4151
NSN 5920-00-513-4546
NSN 5950-01-641-7722
NSN 5945-00-489-0380
NSN 5915-00-058-5883
NSN 5935-01-382-8935
NSN 6320-01-157-9076
NSN 6135-01-486-6537
NSN 6645-01-527-4456
NSN 5998-01-276-2161