Internal Torx, Internal Hex, TX, Hex, 6-Point
AF, Imperial, Metric, Torx, SAE
5/16 ", 7/16 ", 5 mm, 3/16 ", 9/16 "
6.35, 38.1, 25.4, 19.05, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide