External Torx, Internal Torx, External Hex, Hex, TX
AF, Torx, Imperial, Metric, SAE
5 mm, 9/16 ", 5.5 mm, 5/8 ", 11/16 "
1, 1-1/2, 2-1/2, 1/2, 1/4
38.1, 19.05, 25.4, 6.35, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide