Internal Torx, External Hex, Internal Hex, TX, Hex
Torx, AF, Imperial, Metric, SAE
4 mm, 7/32 ", 11/16 ", 7/8 ", 5 mm
38.1, 9.53, 25.4, 19.05, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide