External Torx, External Hex, Internal Hex, TX, Hex
Torx, Metric, AF, Imperial, SAE
5/16 ", 9/16 ", 34 mm, 32 mm, 9 mm
25.4, 6.35, 38.1, 9.53, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Oxide, Black Phosphate