Internal Hex, Internal Torx, External Hex, Hex, TX
Metric, Imperial, AF, Torx, SAE
15/16 ", 5/8 ", 5.5 mm, 9/16 ", 29 mm
1, 1-1/2, 2-1/2, 3/8, 1/2
25.4, 9.53, 19.05, 6.35, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide