Internal Hex, Internal Torx, External Hex, Hex, TX
AF, Torx, Metric, Imperial, SAE
6 mm, 7/32 ", 9/16 ", 3/16 ", 11/16 "
3/4, 1-1/2, 2-1/2, 1, 1/4
6.35, 25.4, 19.05, 12.5, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide