External Hex, Internal Hex, Internal Torx, TX, Hex
AF, Torx, Imperial, SAE, Metric
15 mm, 3/16 ", 7/16 ", 11 mm, 35 mm
3/4, 1, 1-1/2, 2-1/2, 1/4
25.4, 19.05, 9.53, 6.35, 12.5
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Phosphatized, Oxidised, Black Oxide, Black Phosphate