Internal Torx, External Hex, Hex, TX, External Torx
Imperial, AF, Torx, Metric, SAE
10 mm, 13 mm, 9/16 ", 11/16 ", 1-1/2 "
38.1, 9.53, 19.05, 6.35, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide