The Hertel Extension Tap is a precision threading tool designed for creating M10 x 1.5 metric coarse threads. Featuring 3 flutes and a D6 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" 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. Part #G837637 from MSC Industrial delivers professional-grade performance for machinists and manufacturing professionals who demand reliable threading tools. This specialized tap is perfect for automotive, industrial machinery, and precision engineering applications where accurate metric threading is essential.