Internal Hex, External Hex, TX, Hex, External Torx
AF, Torx, Imperial, SAE, Metric
9/16 ", 15/16 ", 5/8 ", 3/16 ", 10 mm
19.05, 9.53, 6.35, 12.5, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide