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 6645-00-851-6654
NSN 5935-00-823-0993
NSN 5975-01-237-5769
NSN 5985-01-426-8726
NSN 5910-01-504-7601
NSN 5930-01-357-6121
NSN 5996-01-382-9710
NSN 5910-00-524-6717
NSN 6240-01-340-7591
NSN 6685-00-794-9187
NSN 7035-01-344-4192
NSN 6150-00-155-3578