External Torx, Internal Torx, External Hex, TX, Hex
Imperial, Torx, AF, SAE, Metric
5/16 ", 5/8 ", 9/16 ", 26 mm, 11/16 "
1/4, 1-1/2, 2-1/2, 3/4, 1/2
9.53, 25.4, 19.05, 38.1, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Phosphatized, Oxidised, Black Phosphate, Black Oxide