Internal Hex, Internal Torx, External Hex, TX, Hex
Torx, Imperial, AF, SAE, Metric
5 mm, 5.5 mm, 11/16 ", 36 mm, 25 mm
1, 3/4, 1-1/2, 1/4, 2-1/2
12.5, 25.4, 19.05, 9.53, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide