Internal Torx, External Hex, Internal Hex, Hex, TX
AF, Imperial, Torx, Metric, SAE
7/32 ", 5/16 ", 15 mm, 9 mm, 11/16 "
19.05, 9.53, 25.4, 38.1, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide