Internal Torx, Internal Hex, External Hex, Hex, TX
Imperial, Metric, AF, Torx, SAE
15/16 ", 5/8 ", 5 mm, 5/16 ", 11/16 "
1/4, 3/4, 1-1/2, 2-1/2, 3/8
38.1, 19.05, 6.35, 9.53, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Phosphated, Oxidised, Black Phosphate, Black Oxide