Internal Torx, External Hex, TX, Hex, External Torx
Metric, AF, Imperial, Torx, SAE
3/16 ", 7 mm, 5/16 ", 11/16 ", 28 mm
38.1, 9.53, 25.4, 6.35, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide