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 5996-01-423-7266
NSN 5990-01-544-0364
NSN 5905-00-147-5177
NSN 5996-00-960-9494
NSN 5975-01-064-2612
NSN 6650-01-463-2274
NSN 2925-00-684-7708
NSN 6610-01-311-5872
NSN 5915-00-000-0148
NSN 6320-01-143-3597
NSN 5975-00-106-1520
NSN 5895-01-650-3811