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 6620-01-180-2687
NSN 6320-01-607-0347
NSN 5905-00-944-7354
NSN 5960-01-537-8161
NSN 6150-01-503-9537
NSN 5996-00-939-2346
NSN 6150-01-136-8911
NSN 6610-00-376-7689
NSN 6610-01-194-8659
NSN 2925-01-254-3068
NSN 5975-01-334-3671
NSN 6105-01-500-8557