Internal Hex, External Torx, External Hex, TX, Hex
Torx, AF, Imperial, Metric, SAE
13/16 ", 5.5 mm, 10 mm, 11/16 ", 1-1/2 "
3/4, 1-1/2, 1/4, 2-1/2, 1
6.35, 38.1, 19.05, 9.53, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide