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: Washers other than lock washers, iron or steel
NSN 4140-01-256-4597
NSN 2925-00-753-8598
NSN 5990-01-417-4402
NSN 5945-01-427-3790
NSN 5920-00-900-0220
NSN 6650-01-281-4651
NSN 6110-01-543-7420
NSN 5965-00-177-2932
NSN 5996-00-455-8299
NSN 6610-01-383-4458
NSN 6130-01-237-8922
NSN 5935-01-421-3017