External Hex, Internal Torx, TX, Hex, External Torx
Imperial, Metric, Torx, AF, SAE
5/8 ", 5/16 ", 11/16 ", 26 mm, 30 mm
9.53, 25.4, 19.05, 6.35, 12.5
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide