Internal Torx, Internal Hex, External Hex, Hex, TX
Metric, AF, Torx, Imperial, SAE
9/16 ", 5/16 ", 7/16 ", 11/16 ", 35 mm
1, 1-1/2, 1/4, 2-1/2, 3/8
9.53, 19.05, 6.35, 38.1, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide