Internal Hex, Internal Torx, External Hex, TX, Hex
AF, Imperial, Metric, Torx, SAE
9/16 ", 10 mm, 5/16 ", 34 mm, 1-1/2 "
1-1/2, 1/4, 2-1/2, 1/2, 3/8
6.35, 19.05, 9.53, 25.4, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide