Internal Torx, External Hex, Hex, TX, External Torx
AF, Imperial, Torx, SAE, Metric
15/16 ", 5/16 ", 7/16 ", 5/8 ", 11/16 "
1, 2-1/2, 1-1/2, 3/4, 3/8
9.53, 6.35, 12.5, 25.4, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Oxide, Black Phosphate