Internal Torx, Internal Hex, External Hex, Hex, TX
AF, Imperial, Torx, SAE, Metric
9/32 ", 11/16 ", 5/8 ", 5 mm, 7/16 "
1-1/2, 2-1/2, 1, 3/8, 3/4
6.35, 25.4, 9.53, 19.05, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide