External Torx, Internal Torx, External Hex, Hex, TX
AF, Torx, Imperial, SAE, Metric
13/16 ", 5/16 ", 5/8 ", 3/16 ", 9 mm
1/4, 3/8, 3/4, 1-1/2, 2-1/2
9.53, 25.4, 6.35, 19.05, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide