Internal Torx, External Torx, External Hex, Hex, TX
Imperial, Torx, Metric, AF, SAE
5 mm, 9/16 ", 3/16 ", 1/2 ", 7/16 "
1/4, 2-1/2, 1-1/2, 1/2, 3/4
9.53, 6.35, 19.05, 12.5, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide