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 5990-01-504-9265
NSN 5996-00-348-3844
NSN 6650-01-326-3799
NSN 5920-01-061-3158
NSN 6320-00-330-4327
NSN 5930-01-317-4090
NSN 6130-01-032-0937
NSN 5999-00-119-7294
NSN 6220-00-629-9271
NSN 4140-01-472-3727
NSN 7035-01-633-9537
NSN 6240-01-646-3061