External Hex, Internal Hex, Internal Torx, Hex, TX
Imperial, Torx, AF, Metric, SAE
9/32 ", 9/16 ", 3/16 ", 9 mm, 14 mm
1/4, 3/4, 1-1/2, 3/8, 1/2
38.1, 19.05, 9.53, 25.4, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide