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 4140-01-308-8779
NSN 5990-00-146-3534
NSN 6685-01-466-6248
NSN 6320-00-403-6003
NSN 5950-01-544-7816
NSN 6240-00-539-9770
NSN 6620-01-582-2046
NSN 6150-00-593-5199
NSN 5835-01-566-5462
NSN 5915-00-264-5657
NSN 6130-00-859-5161
NSN 5990-00-120-1192