Internal Torx, External Hex, TX, Hex, External Torx
AF, Torx, Imperial, SAE, Metric
7/32 ", 8 mm, 9/16 ", 5/16 ", 11/16 "
6.35, 19.05, 9.53, 12.5, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide