Internal Torx, External Hex, TX, Hex, 6-Point
Metric, AF, Torx, Imperial, SAE
5/8 ", 5.5 mm, 11 mm, 11/16 ", 36 mm
3/8, 1/4, 3/4, 1-1/2, 1/2
19.05, 12.5, 9.53, 25.4, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Phosphatized, Oxidised, Black Oxide, Black Phosphate