Internal Torx, External Hex, Hex, TX, External Torx
Imperial, AF, Torx, SAE, Metric
3/16 ", 7/16 ", 9/16 ", 5.5 mm, 25 mm
1/4, 3/4, 1-1/2, 2-1/2, 1/2
9.53, 25.4, 6.35, 19.05, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide