Internal Torx, External Hex, TX, Hex, 6-Point
Imperial, AF, Metric, Torx, SAE
6 mm, 7/32 ", 9/32 ", 5.5 mm, 5/16 "
9.53, 6.35, 25.4, 19.05, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide