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 5930-01-554-2284
NSN 7035-01-222-2534
NSN 6110-00-424-4557
NSN 5945-01-034-9782
NSN 6320-00-688-9983
NSN 5998-00-284-2017
NSN 6105-01-479-3404
NSN 5975-00-571-4143
NSN 6105-00-945-0795
NSN 5960-01-339-3037
NSN 5895-01-116-4632
NSN 5950-01-607-0357