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 6135-01-659-7653
NSN 5975-01-521-8912
NSN 6620-00-983-2824
NSN 5998-01-653-2273
NSN 6110-00-816-9715
NSN 5920-00-802-0666
NSN 6130-01-512-2683
NSN 6150-00-452-9078
NSN 5975-01-180-5971
NSN 6130-01-528-9874
NSN 6110-00-738-9767
NSN 5945-00-110-9443