Internal Torx, External Hex, Hex, TX, External Torx
AF, Metric, Imperial, Torx, SAE
7/32 ", 9 mm, 9/16 ", 7/16 ", 11/16 "
19.05, 6.35, 25.4, 38.1, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Phosphated, Oxidised, Black Phosphate, Black Oxide