External Hex, Internal Torx, Internal Hex, TX, Hex
Torx, AF, Imperial, SAE, Metric
3/16 ", 4.5 mm, 7/32 ", 9/16 ", 11/16 "
38.1, 9.53, 12.5, 19.05, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide