Internal Torx, Internal Hex, External Hex, TX, Hex
Torx, Imperial, AF, Metric, SAE
9/16 ", 3/16 ", 5/16 ", 7/16 ", 29 mm
1-1/2, 1/2, 2-1/2, 3/8, 3/4
25.4, 38.1, 9.53, 19.05, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide