Internal Hex, Internal Torx, External Hex, TX, Hex
Torx, Metric, AF, Imperial, SAE
7/32 ", 9/32 ", 7/16 ", 9/16 ", 11/16 "
38.1, 19.05, 12.5, 6.35, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide