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 7035-01-512-0334
NSN 5855-01-054-9014
NSN 6620-01-451-3742
NSN 6620-00-562-6337
NSN 5990-00-019-2486
NSN 6145-01-232-1319
NSN 5935-01-047-6445
NSN 6320-00-908-6841
NSN 5975-01-116-7517
NSN 5835-00-247-0161
NSN 6145-00-921-4520
NSN 5920-00-468-3074