Internal Torx, External Torx, External Hex, TX, Hex
AF, Torx, Metric, Imperial, SAE
7/16 ", 3/16 ", 11 mm, 5/16 ", 5/8 "
3/8, 1/4, 3/4, 2-1/2, 1/2
25.4, 6.35, 12.5, 38.1, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide