Internal Torx, External Hex, TX, Hex, 6-Point
Imperial, AF, Torx, SAE, Metric
9/32 ", 5.5 mm, 7/16 ", 16 mm, 9/16 "
38.1, 25.4, 6.35, 19.05, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide