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