External Torx, Internal Hex, External Hex, Hex, TX
AF, Imperial, Metric, Torx, SAE
14 mm, 7/32 ", 9/16 ", 3/16 ", 11/16 "
1/4, 1/2, 3/4, 2-1/2, 3/8
25.4, 9.53, 6.35, 19.05, 12.5
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Phosphated, Oxidised, Black Phosphate, Black Oxide