The Hertel Straight Flute Tap is a precision threading tool designed for creating accurate 1/2-20 UNF internal threads. Featuring four straight flutes that efficiently evacuate chips during operation, this tap ensures clean, precise cuts in various materials. Constructed from high-quality high-speed steel with a bright/uncoated finish, it delivers exceptional durability and cutting performance for demanding applications. The taper chamfer design with 3B class of fit provides optimal thread engagement, while the 3-3/8" overall length offers excellent reach and control during threading operations. This right-hand H3 series tap is ideal for automotive work, machinery maintenance, and precision manufacturing projects. The straight flute design allows for effective chip removal, reducing the risk of clogging and thread damage. Whether you're a professional machinist or serious DIY enthusiast, this Hertel tap delivers the reliability and precision needed for creating consistent, high-quality threads.