External Hex, Internal Torx, TX, Hex, External Torx
Imperial, Metric, AF, Torx, SAE
7/8 ", 3/16 ", 7/16 ", 9/16 ", 11/16 "
9.53, 38.1, 19.05, 25.4, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide