YG-1 F1 series vanadium alloy HSS spiral flute tap for aluminium alloys or die cast aluminium. High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications. Round shanks allow use with a wide variety of toolholding systems. When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging. 0.197-inches thread length. Applications: Excellent for pure aluminum/aluminum alloys, aluminum alloy castings.