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