External Hex, TX, Hex, External Torx, 6-Point
Imperial, Metric, Torx, AF, SAE
11 mm, 5/8 ", 9 mm, 35 mm, 23 mm
3/4, 3/8, 2-1/2, 1/2, 1/4
38.1, 6.35, 9.53, 25.4, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Phosphatized, Oxidised, Black Phosphate, Black Oxide