Internal Hex, Internal Torx, Hex, TX, External Torx
AF, Torx, Imperial, SAE, Metric
7/16 ", 13/16 ", 15 mm, 5/8 ", 9/16 "
38.1, 6.35, 12.5, 9.53, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide