Internal Torx, Internal Hex, External Hex, TX, Hex
Imperial, AF, Torx, Metric, SAE
15/16 ", 13/16 ", 7/16 ", 9/16 ", 1-1/2 "
3/4, 1-1/2, 2-1/2, 1/2, 3/8
6.35, 38.1, 25.4, 9.53, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide