Internal Torx, Internal Hex, External Torx, TX, Hex
Metric, Imperial, Torx, AF, SAE
7/32 ", 9/32 ", 15/16 ", 7/16 ", 9/16 "
1, 1-1/2, 2-1/2, 1/2, 3/8
38.1, 19.05, 6.35, 12.5, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide