Internal Torx, External Hex, Hex, TX, External Torx
Metric, AF, Torx, Imperial, SAE
9/32 ", 6 mm, 5/16 ", 12 mm, 5/8 "
1/4, 1-1/2, 3/4, 2-1/2, 1
38.1, 25.4, 9.53, 19.05, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Oxide, Black Phosphate