Internal Torx, Internal Hex, External Hex, TX, Hex
Torx, AF, Metric, Imperial, SAE
9 mm, 5/16 ", 3/16 ", 7/16 ", 11/16 "
1/2, 1/4, 3/4, 2-1/2, 3/8
38.1, 19.05, 6.35, 25.4, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide