Internal Torx, Internal Hex, External Hex, Hex, TX
Torx, Imperial, AF, Metric, SAE
9/32 ", 5.5 mm, 15/16 ", 5/16 ", 5/8 "
1-1/2, 3/8, 2-1/2, 1/2, 3/4
19.05, 9.53, 25.4, 6.35, 12.5
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide