External Torx, Internal Hex, External Hex, Hex, TX
Metric, Imperial, AF, Torx, SAE
15/16 ", 13/16 ", 9/16 ", 3/16 ", 11/16 "
19.05, 9.53, 38.1, 25.4, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide