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 5965-00-246-5612
NSN 6150-01-135-4320
NSN 5895-00-146-1809
NSN 5950-00-133-3827
NSN 5975-00-189-7849
NSN 6685-00-629-2043
NSN 5855-01-085-5354
NSN 5950-01-281-2763
NSN 5999-00-203-5573
NSN 5965-01-218-5003
NSN 6320-01-643-0850
NSN 6145-00-635-9460