Internal Torx, Internal Hex, External Hex, Hex, TX
Metric, AF, Torx, Imperial, SAE
5.5 mm, 15/16 ", 5/8 ", 5 mm, 3/16 "
1/4, 3/8, 2-1/2, 1/2, 3/4
38.1, 6.35, 9.53, 19.05, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide