Internal Torx, External Hex, Hex, TX, External Torx
Torx, AF, Imperial, Metric, SAE
9/16 ", 9 mm, 5 mm, 5/16 ", 11/16 "
3/8, 1-1/2, 2-1/2, 1, 1/2
19.05, 9.53, 38.1, 6.35, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide