Internal Torx, Internal Hex, External Torx, Hex, TX
AF, Torx, Metric, Imperial, SAE
7/32 ", 5/16 ", 9 mm, 5/8 ", 11/16 "
1, 2-1/2, 1-1/2, 1/2, 3/8
25.4, 6.35, 12.5, 19.05, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide