External Torx, Internal Torx, External Hex, TX, Hex
Imperial, Torx, AF, SAE, Metric
3/16 ", 9 mm, 14 mm, 5/16 ", 11/16 "
1-1/2, 1/4, 2-1/2, 3/8, 3/4
19.05, 6.35, 25.4, 38.1, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide