External Torx, External Hex, TX, Hex, 6-Point
AF, Torx, Imperial, SAE, Metric
5/16 ", 5/8 ", 3/16 ", 13 mm, 15 mm
1/4, 3/4, 1-1/2, 2-1/2, 1/2
25.4, 19.05, 38.1, 9.53, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide