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 6135-00-643-4843
NSN 5950-01-329-4058
NSN 5910-00-275-8283
NSN 6135-01-502-5787
NSN 6610-01-658-6611
NSN 5998-01-155-1390
NSN 6110-00-223-8684
NSN 5895-00-432-4823
NSN 5975-01-270-1429
NSN 5965-00-182-7928
NSN 6650-00-754-2276
NSN 6105-01-364-1317