Internal Hex, Internal Torx, External Hex, TX, Hex
Imperial, Torx, AF, SAE, Metric
8 mm, 9 mm, 5/16 ", 11/16 ", 1-1/2 "
1/2, 3/4, 1, 1-1/2, 2-1/2
6.35, 25.4, 19.05, 9.53, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Oxide, Black Phosphate