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 6320-00-242-3300
NSN 4140-00-164-6832
NSN 6150-00-058-8669
NSN 6145-01-579-4395
NSN 6650-01-311-9011
NSN 6135-01-445-6589
NSN 5930-01-647-0972
NSN 5945-01-053-5624
NSN 6145-00-296-0085
NSN 5920-01-375-3164
NSN 6620-01-379-3300
NSN 5998-00-531-5854