Internal Hex, External Hex, Internal Torx, TX, Hex
Torx, AF, Metric, Imperial, SAE
15/16 ", 3/16 ", 5/16 ", 28 mm, 1-1/2 "
25.4, 9.53, 12.5, 6.35, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide