External Torx, Internal Torx, External Hex, Hex, TX
Metric, Imperial, Torx, AF, SAE
15/16 ", 13 mm, 5/8 ", 11/16 ", 10 mm
1-1/2, 3/8, 2-1/2, 1/2, 1
38.1, 19.05, 6.35, 25.4, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide