Internal Torx, External Hex, Hex, TX, 6-Point
AF, Metric, Imperial, Torx, SAE
9/16 ", 5/16 ", 25 mm, 29 mm, 11/16 "
3/8, 2-1/2, 1-1/2, 1/2, 3/4
38.1, 25.4, 9.53, 6.35, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide