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 6620-01-514-8859
NSN 5855-00-951-6483
NSN 5895-01-140-6008
NSN 4140-00-361-4691
NSN 5910-01-156-4498
NSN 5855-01-522-0723
NSN 5990-00-839-9571
NSN 6620-00-568-3947
NSN 6610-00-512-4183
NSN 6110-00-953-1027
NSN 5915-01-451-4332
NSN 5999-01-644-8425