External Torx, Internal Torx, External Hex, Hex, TX
Metric, Torx, AF, Imperial, SAE
13/16 ", 5/16 ", 9/16 ", 11/16 ", 26 mm
1, 1-1/2, 2-1/2, 3/4, 1/2
9.53, 25.4, 6.35, 19.05, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Phosphated, Oxidised, Black Phosphate, Black Oxide