Internal Torx, Internal Hex, Hex, TX, External Torx
Imperial, AF, Torx, Metric, SAE
9/16 ", 5 mm, 5/16 ", 5/8 ", 9 mm
1-1/2, 1/4, 3/8, 1/2, 2-1/2
38.1, 9.53, 6.35, 19.05, 12.5
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide