Internal Torx, External Hex, TX, Hex, External Torx
Imperial, AF, Torx, Metric, SAE
7/32 ", 9/32 ", 9 mm, 23 mm, 11/16 "
3/4, 1-1/2, 3/8, 2-1/2, 1/2
9.53, 6.35, 38.1, 19.05, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide