Internal Torx, External Hex, TX, Hex, External Torx
Torx, AF, Metric, Imperial, SAE
3/16 ", 5.5 mm, 5/16 ", 11/16 ", 9 mm
1, 2-1/2, 1-1/2, 3/8, 1/2
25.4, 6.35, 19.05, 12.5, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide