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 6150-01-303-0828
NSN 6610-01-422-2376
NSN 5975-01-298-1940
NSN 5990-01-584-8363
NSN 5996-00-547-9989
NSN 6240-01-478-2125
NSN 5915-01-435-7556
NSN 6110-01-605-0815
NSN 4140-00-767-8166
NSN 5920-01-181-6776
NSN 5925-01-214-8249
NSN 5998-01-512-1883