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 6130-01-460-6691
NSN 2925-01-171-2511
NSN 5990-00-524-2293
NSN 5999-01-401-5322
NSN 6150-01-258-8698
NSN 6320-01-453-2358
NSN 5910-01-592-2746
NSN 6105-01-310-8436
NSN 6320-01-519-8767
NSN 6220-00-190-2000
NSN 5935-01-384-9579
NSN 6685-01-579-1799