Internal Torx, External Hex, TX, Hex, External Torx
Torx, Metric, AF, Imperial, SAE
5.5 mm, 5/8 ", 3/16 ", 13 mm, 9 mm
1-1/2, 1, 2-1/2, 1/2, 3/8
9.53, 38.1, 6.35, 25.4, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide