External Torx, Internal Torx, External Hex, Hex, TX
Imperial, AF, Torx, Metric, SAE
7/16 ", 7/32 ", 5/8 ", 9/16 ", 11/16 "
1/4, 3/4, 1-1/2, 2-1/2, 1/2
38.1, 6.35, 12.5, 25.4, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Oxide, Black Phosphate