Internal Torx, Internal Hex, External Hex, TX, Hex
AF, Torx, Imperial, Metric, SAE
15/16 ", 5/16 ", 7/8 ", 9/16 ", 9 mm
1, 1-1/2, 3/4, 1/4, 2-1/2
38.1, 19.05, 25.4, 6.35, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide