Internal Torx, Internal Hex, External Hex, TX, Hex
AF, Torx, Imperial, Metric, SAE
7/16 ", 8 mm, 6 mm, 9/16 ", 5/16 "
1-1/2, 1, 2-1/2, 3/8, 3/4
38.1, 9.53, 6.35, 19.05, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Oxide, Black Phosphate