Internal Torx, External Torx, External Hex, TX, Hex
Imperial, Torx, Metric, AF, SAE
5/8 ", 9 mm, 11/16 ", 35 mm, 1-1/2 "
25.4, 9.53, 6.35, 19.05, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide