Internal Torx, External Hex, Internal Hex, Hex, TX
Imperial, AF, Metric, Torx, SAE
9/32 ", 11/16 ", 15/16 ", 3/16 ", 5/8 "
3/4, 1-1/2, 3/8, 2-1/2, 1/2
12.5, 25.4, 9.53, 6.35, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Phosphatized, Oxidised, Black Phosphate, Black Oxide