Internal Torx, External Hex, Hex, TX, External Torx
Imperial, Metric, Torx, AF, SAE
5 mm, 7/16 ", 5/8 ", 25 mm, 1-1/2 "
1, 3/4, 1-1/2, 2-1/2, 1/2
19.05, 25.4, 9.53, 6.35, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide