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 6610-00-248-1559
NSN 5920-01-088-8312
NSN 5895-01-357-9180
NSN 5998-01-570-1990
NSN 5915-01-258-5308
NSN 5965-01-561-1504
NSN 6240-01-508-2848
NSN 5996-00-836-2558
NSN 6620-00-674-8390
NSN 5930-00-964-7363
NSN 5835-01-509-8992
NSN 6130-01-131-5324