Internal Torx, External Hex, TX, Hex, External Torx
Imperial, Metric, AF, Torx, SAE
9/32 ", 7/16 ", 11/16 ", 3/4 ", 25 mm
38.1, 6.35, 25.4, 12.5, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide