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 6220-00-419-0635
NSN 6320-01-352-5653
NSN 5910-01-268-0953
NSN 5855-01-393-2455
NSN 6240-00-981-8218
NSN 5985-01-569-7862
NSN 6645-01-312-8601
NSN 5910-01-473-0902
NSN 6220-00-244-2040
NSN 5930-01-634-0659
NSN 5960-01-544-1273
NSN 5895-00-745-7800