Internal Hex, External Torx, TX, Hex, 6-Point
AF, Torx, Imperial, Metric, SAE
9 mm, 11/16 ", 13/16 ", 7/16 ", 25 mm
38.1, 6.35, 9.53, 19.05, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Oxide, Black Phosphate