Internal Hex, Internal Torx, External Hex, TX, Hex
Torx, Imperial, AF, SAE, Metric
7/32 ", 15/16 ", 5/16 ", 3/4 ", 29 mm
38.1, 19.05, 9.53, 6.35, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide