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 6130-00-348-1410
NSN 6620-01-619-7737
NSN 5999-01-275-5876
NSN 6620-00-626-8126
NSN 6650-01-276-4486
NSN 5910-01-576-8402
NSN 6320-00-174-1362
NSN 5950-01-364-6857
NSN 5960-01-485-7532
NSN 5996-01-451-8141
NSN 5985-00-626-9051
NSN 2925-00-245-4440