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 5945-01-141-6697
NSN 6610-01-033-2402
NSN 6135-00-455-2425
NSN 5950-01-092-2740
NSN 6145-01-107-7370
NSN 6645-00-521-0353
NSN 5975-01-197-7673
NSN 6145-01-603-5706
NSN 5855-01-027-8414
NSN 5975-01-053-7577
NSN 5999-01-571-4947
NSN 5950-01-479-3349