External Hex, External Torx, Internal Hex, Hex, TX
Torx, Imperial, AF, SAE, Metric
5/8 ", 5 mm, 9/16 ", 11/16 ", 32 mm
38.1, 6.35, 25.4, 19.05, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide