Internal Hex, Internal Torx, External Hex, TX, Hex
AF, Metric, Imperial, Torx, SAE
13/16 ", 5/16 ", 5/8 ", 3/16 ", 5.5 mm
3/4, 1-1/2, 1/4, 2-1/2, 3/8
9.53, 38.1, 6.35, 19.05, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide