Internal Hex, External Hex, TX, Hex, 6-Point
Metric, Imperial, AF, Torx, SAE
7/32 ", 11/16 ", 15/16 ", 5/16 ", 9/16 "
25.4, 9.53, 19.05, 38.1, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide