Internal Torx, External Hex, TX, Hex, External Torx
Metric, AF, Torx, Imperial, SAE
9/32 ", 15 mm, 7/16 ", 3/16 ", 7 mm
12.5, 38.1, 25.4, 9.53, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide