Internal Torx, External Hex, TX, Hex, External Torx
Imperial, Torx, Metric, AF, SAE
15/16 ", 13/16 ", 3/16 ", 11 mm, 11/16 "
1/4, 3/8, 2-1/2, 1/2, 3/4
38.1, 12.5, 6.35, 25.4, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide