Internal Torx, Internal Hex, External Hex, TX, Hex
Imperial, Metric, AF, Torx, SAE
6 mm, 5.5 mm, 11/16 ", 15/16 ", 32 mm
1/4, 1, 2-1/2, 1-1/2, 3/8
9.53, 38.1, 25.4, 6.35, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide