External Hex, Internal Hex, Internal Torx, Hex, TX
AF, Torx, Metric, Imperial, SAE
5 mm, 7/32 ", 11 mm, 3/16 ", 5/16 "
19.05, 25.4, 38.1, 6.35, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide