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 5965-00-309-4814
NSN 6130-00-879-6532
NSN 4140-00-057-2785
NSN 6645-00-881-9978
NSN 5965-00-985-9157
NSN 6620-01-548-5082
NSN 5855-01-506-6767
NSN 5915-00-909-6007
NSN 5895-01-038-9813
NSN 2925-01-113-6904
NSN 6130-00-372-4322
NSN 6130-00-489-9835