Internal Torx, External Hex, Hex, TX, External Torx
Torx, AF, Imperial, SAE, Metric
3/16 ", 9 mm, 5/8 ", 25 mm, 23 mm
1/4, 3/4, 1-1/2, 1/2, 2-1/2
6.35, 19.05, 9.53, 25.4, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide