The Hertel Straight Flute Tap is a precision threading tool designed for creating 1-12 UNF threads with exceptional accuracy. Featuring four flutes with a plug chamfer configuration, this tap excels in both through holes and blind holes deeper than the thread length. Constructed from high-quality high-speed steel with a bright/uncoated finish, it delivers outstanding durability and cutting performance in demanding applications. The 3B class of fit provides the optimal balance between easy assembly and secure thread engagement for industrial uses. With a 5-1/8" overall length and right-hand thread direction, this tap ensures consistent threading results. The straight flute design efficiently evacuates chips during operation, preventing clogging and ensuring clean thread formation. This professional-grade tap is ideal for machinists, maintenance technicians, and manufacturing operations requiring precise internal threading capabilities.