Internal Torx, External Hex, TX, Hex, External Torx
Imperial, AF, Torx, SAE, Metric
5 mm, 9/16 ", 5/16 ", 11/16 ", 36 mm
1/2, 3/8, 2-1/2, 1-1/2, 1/4
9.53, 38.1, 6.35, 25.4, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide