Internal Torx, External Torx, External Hex, Hex, TX
Torx, AF, Imperial, Metric, SAE
9/16 ", 6 mm, 5/16 ", 5/8 ", 25 mm
6.35, 12.5, 38.1, 9.53, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide