Internal Torx, Internal Hex, External Hex, TX, Hex
AF, Metric, Torx, Imperial, SAE
3/16 ", 14 mm, 5/8 ", 11/16 ", 29 mm
3/8, 1-1/2, 2-1/2, 1/2, 1
19.05, 9.53, 25.4, 38.1, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide