Internal Hex, Internal Torx, External Hex, Hex, TX
Torx, Metric, Imperial, AF, SAE
5/8 ", 3/16 ", 5.5 mm, 11/16 ", 34 mm
1-1/2, 1/2, 2-1/2, 3/4, 1
9.53, 38.1, 6.35, 12.5, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide