External Torx, Internal Hex, External Hex, TX, Hex
AF, Torx, Metric, Imperial, SAE
11/32 ", 5/16 ", 7/16 ", 13/16 ", 9 mm
1-1/2, 3/4, 1, 2-1/2, 3/8
6.35, 25.4, 9.53, 38.1, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide