Internal Hex, Internal Torx, External Hex, TX, Hex
Metric, Imperial, AF, Torx, SAE
5 mm, 7 mm, 7/16 ", 5/8 ", 11/16 "
25.4, 12.5, 19.05, 6.35, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide