Internal Hex, Internal Torx, External Hex, TX, Hex
AF, Metric, Imperial, Torx, SAE
9/16 ", 7/32 ", 9/32 ", 7/8 ", 11/16 "
1, 2-1/2, 1-1/2, 1/2, 3/4
38.1, 9.53, 25.4, 6.35, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide