Internal Torx, Internal Hex, External Hex, Hex, TX
Metric, Torx, AF, Imperial, SAE
9/32 ", 5/16 ", 11/16 ", 25 mm, 9 mm
6.35, 19.05, 9.53, 25.4, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Phosphatized, Oxidised, Black Phosphate, Black Oxide