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 6220-01-347-2637
NSN 5945-01-145-9703
NSN 5915-01-083-9182
NSN 6685-01-389-2068
NSN 5920-00-221-6439
NSN 5895-01-375-6748
NSN 5920-00-948-5765
NSN 5905-01-559-7933
NSN 5930-01-611-0136
NSN 5915-01-453-4298
NSN 6320-01-630-7629
NSN 5905-01-516-2679