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 5945-01-420-1323
NSN 6240-00-548-3992
NSN 5895-00-189-9953
NSN 5910-01-371-2553
NSN 5950-01-533-4132
NSN 6320-00-593-0379
NSN 6650-01-158-5099
NSN 5920-01-139-4384
NSN 4140-01-227-4674
NSN 2925-01-578-7731
NSN 5960-01-624-1170
NSN 5925-00-071-5606