External Torx, Internal Torx, External Hex, TX, Hex
Imperial, Metric, Torx, AF, SAE
3/16 ", 16 mm, 5/8 ", 35 mm, 1-1/2 "
3/4, 1, 1-1/2, 2-1/2, 1/2
6.35, 19.05, 38.1, 9.53, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide