Internal Torx, Internal Hex, External Hex, TX, Hex
Imperial, Torx, AF, Metric, SAE
9/32 ", 7/16 ", 5/8 ", 9/16 ", 3/4 "
38.1, 25.4, 6.35, 19.05, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide