External Hex, External Torx, Internal Torx, TX, Hex
Imperial, AF, Torx, Metric, SAE
6 mm, 9/32 ", 5/16 ", 12 mm, 11/16 "
1/4, 3/4, 1, 2-1/2, 1-1/2
25.4, 12.5, 9.53, 6.35, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide