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 7035-01-141-3041
NSN 6105-00-288-5872
NSN 5835-01-004-2563
NSN 6685-00-803-6421
NSN 5999-00-948-5498
NSN 7035-01-569-2151
NSN 5985-01-067-8041
NSN 5935-01-056-5494
NSN 5950-01-403-2852
NSN 6610-01-412-0058
NSN 5835-00-764-4388
NSN 6610-01-072-3447