Internal Hex, Internal Torx, External Torx, TX, Hex
Metric, Imperial, Torx, AF, SAE
9 mm, 14 mm, 5/16 ", 25 mm, 11/16 "
38.1, 9.53, 19.05, 25.4, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide