Internal Torx, External Hex, TX, Hex, External Torx
Imperial, Torx, Metric, AF, SAE
9/32 ", 5 mm, 9 mm, 5/8 ", 11/16 "
3/4, 1/4, 2-1/2, 1/2, 3/8
12.5, 25.4, 19.05, 9.53, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide