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 5985-00-870-0785
NSN 5960-00-180-0805
NSN 2925-01-281-6403
NSN 6130-01-080-8856
NSN 6105-00-903-6789
NSN 6620-00-986-0747
NSN 6105-01-521-1413
NSN 6105-01-372-0062
NSN 2925-00-795-4063
NSN 6105-00-795-7384
NSN 5965-01-241-0553
NSN 5895-01-176-9881