External Torx, Internal Torx, External Hex, TX, Hex
Torx, Imperial, AF, Metric, SAE
5/16 ", 9/32 ", 15/16 ", 7/16 ", 11/16 "
3/4, 1, 1-1/2, 2-1/2, 1/2
19.05, 9.53, 25.4, 38.1, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Oxide, Black Phosphate