Internal Hex, Internal Torx, External Hex, TX, Hex
Torx, Metric, Imperial, AF, SAE
9 mm, 13/16 ", 5/16 ", 5/8 ", 34 mm
1/2, 1/4, 3/4, 1-1/2, 2-1/2
25.4, 12.5, 19.05, 6.35, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide