Internal Torx, Internal Hex, External Hex, TX, Hex
AF, Metric, Imperial, Torx, SAE
3/16 ", 17 mm, 26 mm, 25 mm, 11/16 "
19.05, 12.5, 9.53, 25.4, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide