External Hex, Internal Torx, Hex, TX, External Torx
Torx, AF, Imperial, SAE, Metric
5/16 ", 3/16 ", 17 mm, 11/16 ", 1-1/2 "
3/8, 1/4, 1, 2-1/2, 1-1/2
38.1, 19.05, 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