External Torx, Internal Hex, External Hex, TX, Hex
Imperial, Metric, AF, Torx, SAE
11/16 ", 7/16 ", 5/8 ", 5 mm, 9/16 "
12.5, 6.35, 38.1, 9.53, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide