Internal Torx, External Torx, External Hex, TX, Hex
Imperial, AF, Torx, SAE, Metric
7/16 ", 15/16 ", 5/8 ", 5/16 ", 1-1/2 "
1-1/2, 1/4, 3/4, 2-1/2, 1/2
6.35, 25.4, 19.05, 38.1, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Oxide, Black Phosphate