External Torx, Internal Torx, External Hex, TX, Hex
Metric, AF, Imperial, Torx, SAE
5/16 ", 7/16 ", 3/16 ", 5.5 mm, 9 mm
1, 1-1/2, 2-1/2, 3/8, 3/4
9.53, 25.4, 6.35, 19.05, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide