External Torx, Internal Torx, External Hex, TX, Hex
Imperial, AF, Torx, Metric, SAE
9/32 ", 3/16 ", 5.5 mm, 9 mm, 5/8 "
1/2, 1/4, 3/4, 1-1/2, 3/8
38.1, 9.53, 25.4, 19.05, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide