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: Cotters, cotter-pins, washers and similar articles, of aluminum
NSN 6620-00-278-7313
NSN 5960-00-584-4553
NSN 5910-01-597-2019
NSN 5945-00-482-3505
NSN 5950-01-327-6217
NSN 5930-00-724-7096
NSN 6110-01-268-4575
NSN 6685-01-020-7235
NSN 5960-01-399-4327
NSN 5999-01-345-2837
NSN 5935-01-352-0516
NSN 5965-00-661-0469