Internal Torx, External Hex, TX, Hex, External Torx
Imperial, AF, Metric, Torx, SAE
5 mm, 3/16 ", 9/16 ", 11/16 ", 29 mm
3/4, 1, 2-1/2, 1-1/2, 3/8
25.4, 19.05, 38.1, 9.53, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide