Internal Torx, External Hex, Hex, TX, External Torx
Imperial, AF, Torx, SAE, Metric
9/32 ", 9/16 ", 5/8 ", 25 mm, 11/16 "
9.53, 6.35, 25.4, 38.1, 12.5
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Oxide, Black Phosphate