Internal Torx, Internal Hex, External Hex, TX, Hex
Imperial, AF, Torx, Metric, SAE
9/16 ", 3/16 ", 7 mm, 30 mm, 1-1/2 "
1, 3/8, 1/4, 1-1/2, 2-1/2
38.1, 9.53, 6.35, 19.05, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Oxide, Black Phosphate