Internal Torx, Internal Hex, External Hex, TX, Hex
Torx, AF, Metric, Imperial, SAE
7/32 ", 5.5 mm, 9 mm, 7/16 ", 11/16 "
3/4, 1-1/2, 1, 2-1/2, 1/2
19.05, 12.5, 6.35, 25.4, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide