Internal Torx, Internal Hex, External Hex, TX, Hex
AF, Imperial, Torx, SAE, Metric
7 mm, 17 mm, 3/8 ", 5/8 ", 11/16 "
19.05, 6.35, 9.53, 25.4, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide