Internal Hex, Internal Torx, External Hex, TX, Hex
AF, Torx, Imperial, Metric, SAE
5/8 ", 7/8 ", 11/16 ", 36 mm, 1-1/2 "
3/4, 1-1/2, 3/8, 2-1/2, 1/2
38.1, 6.35, 19.05, 25.4, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide