Internal Hex, Internal Torx, External Hex, TX, Hex
Imperial, Torx, AF, Metric, SAE
5/16 ", 3/8 ", 32 mm, 1-1/2 ", 11/16 "
1, 3/4, 1-1/2, 2-1/2, 1/2
9.53, 25.4, 19.05, 6.35, 12.5
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide