The Hertel 5/8-11 UNC 4 Flute Plug Hand Pulley Tap is a precision threading tool engineered for professional machining applications. Crafted from premium high-speed steel with a bright finish, this tap delivers exceptional durability and cutting performance in demanding environments. Its right-hand 4-flute design ensures efficient chip evacuation while maintaining excellent thread quality. The H3 thread limit provides consistent threading accuracy for reliable results. With a generous 6-inch overall length, this tap offers superior reach and leverage for manual tapping operations. Specifically designed for creating uniform internal threads in pulleys and similar components, this plug-style tap excels in through-hole applications across various materials. Manufactured by MSC Industrial to meet rigorous industrial standards, this precision tool is an essential addition to any professional machinist's toolkit, ideal for maintenance professionals and manufacturing operations requiring precise UNC threading capabilities.