Internal Hex, Internal Torx, External Hex, Hex, TX
AF, Torx, Imperial, Metric, SAE
3/16 ", 9 mm, 5/16 ", 5/8 ", 11/16 "
1/4, 1-1/2, 1, 2-1/2, 3/4
38.1, 6.35, 12.5, 19.05, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Phosphatized, Oxidised, Black Phosphate, Black Oxide