External Hex, External Torx, TX, Hex, 6-Point
Imperial, Torx, Metric, AF, SAE
13 mm, 3/16 ", 11 mm, 36 mm, 9 mm
25.4, 12.5, 6.35, 19.05, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide