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 5975-00-265-1747
NSN 6105-01-074-5369
NSN 2925-01-271-8727
NSN 5975-01-187-7744
NSN 6610-01-506-4234
NSN 5935-00-368-9746
NSN 6240-01-358-9980
NSN 5998-01-220-4086
NSN 5930-01-413-9506
NSN 5905-01-476-3529
NSN 5935-01-256-9637
NSN 5945-01-212-6624