Internal Torx, Internal Hex, External Hex, Hex, TX
Imperial, AF, Metric, Torx, SAE
13/16 ", 5/8 ", 9 mm, 5/16 ", 26 mm
19.05, 25.4, 6.35, 9.53, 12.5
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide