The Hertel Spiral Flute Tap is a precision threading tool designed for creating 1/4-20 UNC threads with exceptional accuracy. Featuring 3 flutes with a plug chamfer and 3B class of fit, this tap delivers smooth cutting action and excellent chip evacuation. Crafted from high-speed steel with a bright/uncoated finish, it offers durability and performance for professional threading applications. The spiral flute design efficiently channels chips away from the cutting edge, reducing clogging and improving thread quality. With a 2-1/2" overall length and right-hand configuration for both flute and thread, this tap is engineered for consistent results in various materials. The Hertel tap is an essential tool for machinists, toolmakers, and manufacturing professionals who demand precision and reliability in their threading operations.