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: Copper washers including spring washers not threaded
NSN 6240-01-604-9172
NSN 6135-01-226-4071
NSN 5975-01-199-6360
NSN 6105-01-197-7081
NSN 6150-01-012-0955
NSN 5960-01-285-2152
NSN 6240-00-481-5776
NSN 5950-00-905-7995
NSN 5999-01-437-5732
NSN 7035-01-505-5979
NSN 4140-01-552-8733
NSN 5945-01-352-3910