Internal Torx, Internal Hex, External Hex, Hex, TX
Imperial, Torx, AF, Metric, SAE
11/16 ", 13/16 ", 5 mm, 1/2 ", 1-1/2 "
1-1/2, 3/8, 2-1/2, 3/4, 1/4
38.1, 9.53, 12.5, 19.05, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Oxide, Black Phosphate