Internal Hex, External Torx, External Hex, Hex, TX
Torx, Imperial, Metric, AF, SAE
9/32 ", 15 mm, 7/16 ", 3/16 ", 5/8 "
9.53, 6.35, 19.05, 25.4, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide