Internal Torx, External Hex, TX, Hex, External Torx
Torx, Metric, AF, Imperial, SAE
15/16 ", 5/8 ", 3/16 ", 9 mm, 5/16 "
6.35, 25.4, 9.53, 19.05, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide