The Carmex Spiral Mill Threading Insert is a precision cutting solution designed for metric/ISO threading and milling tasks. It fits a wide range of shop floor needs—from threading small components on compact machining centers to heavy-duty work on high-power milling machines—while delivering smooth cuts and reduced cycle times thanks to its spiral design.

Spiral-fluted toolholders hold 1 to 9 inserts in a compact cutting diameter, and a unique clamping method ensures reliable indexability for consistent tool life. These tools reduce vibration and chatter, helping you achieve a high-grade finish in threading, end milling, roughing, and finishing. Inserts are available in MT7 Sub-Micron Grade with a Titanium Nitride multi-layer coating (ISO K10–K20), a general purpose grade that performs reliably across all materials.

• High-speed, smooth cutting with reduced machining time: The spiral design enables efficient cutting at higher feed rates, delivering faster production and lower cycle times without sacrificing accuracy.
• Flexible insert capacity and reliable indexing: Toolholders accommodate 1 to 9 inserts in a small diameter, with a unique clamping method that keeps inserts precisely indexed for repeatable results.
• Durable MT7 coating for universal material compatibility: MT7 Sub-Micron Grade with TiN multi-layer coating offers wear resistance and versatile performance across threading, roughing, and finishing on a wide range of materials.

This system helps streamline workflows by combining multi-insert capability, vibration control, and a coating designed for durability, enabling you to complete threading and milling tasks with greater confidence, fewer tool changes, and consistently clean finishes.