The Hertel 3/8-24 UNF 4 Flute Plug Hand Pulley Tap is a precision threading tool designed for professional applications. Crafted from high-speed steel with a bright finish, this tap delivers exceptional durability and consistent performance. The 4-flute design ensures efficient chip evacuation and produces smoother thread finishes compared to standard taps. With its plug style configuration, this tap excels at creating threads in pre-drilled holes for general-purpose threading operations. The right-hand flute design with H3 thread limit provides precise dimensional control for accurate threading results. Measuring 6 inches in overall length, this tap offers excellent reach and leverage for hand tapping operations. Ideal for machinists, maintenance professionals, and industrial applications where UNF (Unified National Fine) threading requires tighter tolerances and superior finish quality.