Internal Torx, Internal Hex, External Hex, TX, Hex
AF, Torx, Metric, Imperial, SAE
5 mm, 9/16 ", 3/16 ", 5.5 mm, 34 mm
3/4, 1/4, 2-1/2, 3/8, 1/2
25.4, 12.5, 6.35, 9.53, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide