Internal Torx, External Hex, Hex, TX, 6-Point
Imperial, Torx, AF, Metric, SAE
4 mm, 7/16 ", 7/8 ", 9/16 ", 35 mm
1, 3/4, 1-1/2, 2-1/2, 3/8
25.4, 38.1, 9.53, 6.35, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Oxide, Black Phosphate