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 6650-00-155-8431
NSN 4140-01-448-9725
NSN 5895-01-104-3125
NSN 6105-00-493-7680
NSN 6320-01-524-9488
NSN 6145-00-053-5731
NSN 5935-01-425-1335
NSN 5960-01-250-3478
NSN 6130-00-044-4281
NSN 5855-01-544-9778
NSN 6610-01-343-7614
NSN 6220-01-430-4268