Internal Torx, External Hex, Hex, TX, External Torx
Imperial, Torx, Metric, AF, SAE
13/16 ", 3/16 ", 13 mm, 5/8 ", 9 mm
3/4, 1-1/2, 2-1/2, 3/8, 1/2
19.05, 38.1, 6.35, 25.4, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide