Internal Hex, Internal Torx, External Hex, TX, Hex
Imperial, AF, Torx, Metric, SAE
11/32 ", 3/16 ", 6 mm, 8 mm, 11/16 "
1/2, 1/4, 1-1/2, 2-1/2, 3/4
9.53, 19.05, 6.35, 38.1, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide