Internal Torx, Internal Hex, External Hex, Hex, TX
Imperial, Torx, AF, SAE, Metric
7/16 ", 11/16 ", 3/16 ", 5/16 ", 1-1/2 "
19.05, 12.5, 6.35, 9.53, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide