Internal Torx, External Hex, Hex, TX, External Torx
Imperial, Torx, AF, Metric, SAE
5.5 mm, 15/16 ", 3/16 ", 5/8 ", 11/16 "
3/4, 1-1/2, 2-1/2, 1/4, 3/8
9.53, 6.35, 19.05, 25.4, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide