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 5960-01-136-5737
NSN 5960-01-543-0235
NSN 6240-00-318-8800
NSN 5930-01-441-2404
NSN 5910-01-342-3914
NSN 7035-01-361-8821
NSN 5915-01-310-3704
NSN 6135-00-377-9165
NSN 6650-00-207-9639
NSN 6130-01-630-2455
NSN 6150-01-424-9587
NSN 7035-00-616-4410