Internal Torx, External Hex, TX, Hex, External Torx
Imperial, Torx, Metric, AF, SAE
4 mm, 7/16 ", 15/16 ", 9 mm, 11/16 "
9.53, 19.05, 38.1, 6.35, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Oxide, Black Phosphate