Internal Torx, Internal Hex, External Hex, TX, Hex
AF, Metric, Torx, Imperial, SAE
7/8 ", 5/16 ", 5/8 ", 11/16 ", 1-1/2 "
1-1/2, 2-1/2, 1/2, 3/8, 3/4
6.35, 19.05, 38.1, 9.53, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide