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 5998-01-406-5427
NSN 5925-01-359-1679
NSN 6220-00-819-9325
NSN 6650-00-930-3372
NSN 6645-01-503-6337
NSN 5930-01-356-6560
NSN 5985-01-352-6234
NSN 6220-00-523-0182
NSN 6685-01-340-9735
NSN 5945-00-793-5128
NSN 6650-01-343-4342
NSN 6135-00-145-8884