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