External Torx, Internal Torx, External Hex, TX, Hex
Imperial, AF, Metric, Torx, SAE
15/16 ", 9/16 ", 5 mm, 11/16 ", 1-1/2 "
1-1/2, 3/4, 3/8, 1/4, 1/2
38.1, 19.05, 25.4, 6.35, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Oxide, Black Phosphate