Internal Torx, Internal Hex, External Hex, Hex, TX
Imperial, Torx, Metric, AF, SAE
5 mm, 3/16 ", 12 mm, 7/16 ", 9/16 "
25.4, 19.05, 6.35, 9.53, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide