External Hex, External Torx, Internal Torx, Hex, TX
Torx, AF, Imperial, SAE, Metric
9/16 ", 5/16 ", 7/16 ", 5/8 ", 25 mm
38.1, 6.35, 25.4, 9.53, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide