Internal Hex, External Hex, TX, Hex, 6-Point
Torx, Metric, AF, Imperial, SAE
7/32 ", 9/32 ", 1 ", 9/16 ", 1-1/2 "
19.05, 9.53, 12.5, 25.4, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide