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 5999-00-161-6643
NSN 5935-01-315-1915
NSN 5945-01-273-8783
NSN 6650-01-599-9253
NSN 5920-00-209-0443
NSN 5996-01-420-4187
NSN 6240-01-580-1345
NSN 5855-01-241-1054
NSN 5835-00-905-7165
NSN 5985-01-341-1756
NSN 6240-01-102-4861
NSN 4140-00-704-7615