Internal Torx, Internal Hex, External Hex, TX, Hex
Metric, AF, Torx, Imperial, SAE
9/32 ", 5/16 ", 5/8 ", 3/16 ", 11/16 "
3/4, 1-1/2, 1/4, 2-1/2, 1/2
38.1, 9.53, 25.4, 6.35, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Oxide, Black Phosphate