Internal Torx, External Torx, External Hex, Hex, TX
Torx, Imperial, AF, SAE, Metric
9/32 ", 7/16 ", 9/16 ", 5/8 ", 9 mm
1-1/2, 3/8, 2-1/2, 1/2, 1/4
25.4, 12.5, 9.53, 19.05, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Oxide, Black Phosphate