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 6110-01-218-2160
NSN 4140-00-779-4876
NSN 5935-00-528-8443
NSN 5965-01-070-5515
NSN 6220-01-032-3684
NSN 5975-01-374-1515
NSN 5975-01-607-6129
NSN 6650-01-417-1797
NSN 5999-01-239-8846
NSN 5999-01-442-4018
NSN 5835-00-905-7165
NSN 6610-01-330-7839