Internal Torx, External Hex, Hex, TX, 6-Point
Imperial, AF, Torx, SAE, Metric
5 mm, 10 mm, 3/8 ", 11/16 ", 1-1/2 "
1-1/2, 3/8, 1/4, 2-1/2, 1/2
19.05, 38.1, 9.53, 25.4, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Phosphated, Oxidised, Black Oxide, Black Phosphate