Internal Torx, External Hex, Hex, TX, External Torx
Imperial, AF, Torx, Metric, SAE
5.5 mm, 13/16 ", 5/8 ", 9/16 ", 26 mm
1/2, 1/4, 2-1/2, 3/8, 3/4
19.05, 9.53, 25.4, 6.35, 12.5
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide