Internal Torx, Internal Hex, External Hex, TX, Hex
AF, Torx, Imperial, Metric, SAE
9/16 ", 11/16 ", 16 mm, 5/16 ", 34 mm
1-1/2, 2-1/2, 3/8, 1/2, 3/4
38.1, 19.05, 25.4, 9.53, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Oxide, Black Phosphate