The Hertel Extension Tap is a precision threading tool designed for creating M5 x 0.8 metric coarse threads. Featuring 2 flutes and a D4 design, this high-quality tap is crafted from durable High Speed Steel with a spiral point (plug chamfer) configuration that efficiently channels chips forward—ideal for through holes. With a generous 6-inch overall length, this extension tap provides excellent reach for deep threading applications while maintaining stability. The 6H class of fit ensures industry-standard thread precision and compatibility. This professional-grade threading tool (Part #G859442) is manufactured by MSC Industrial under the trusted Hertel brand, making it suitable for machinists, toolmakers, and manufacturing professionals who demand reliable performance and consistent results in threading operations. Perfect for maintenance shops, fabrication facilities, and production environments where quality and accuracy are paramount.