Internal Torx, External Hex, Internal Hex, TX, Hex
Torx, AF, Metric, Imperial, SAE
12 mm, 5/16 ", 9 mm, 25 mm, 11/16 "
12.5, 19.05, 6.35, 9.53, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Phosphatized, Oxidised, Black Phosphate, Black Oxide