Internal Torx, External Torx, External Hex, Hex, TX
Imperial, Metric, AF, Torx, SAE
3/16 ", 5/16 ", 9/16 ", 33 mm, 29 mm
38.1, 25.4, 9.53, 19.05, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide