Internal Torx, External Hex, Hex, TX, External Torx
AF, Torx, Imperial, SAE, Metric
3/16 ", 4.5 mm, 9/32 ", 9/16 ", 5/16 "
1-1/2, 1/4, 3/4, 1/2, 3/8
12.5, 25.4, 38.1, 6.35, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide