The Carmex Spiral Mill Threading Insert is a metric/ISO threading solution designed for a wide range of milling and threading tasks. It’s ideal for engineers, buyers, tradespeople, hobbyists, and shop floors that need reliable, efficient threading across both small CNC centers and high-power milling machines. The spiral design enables smooth cutting at higher feed rates, helping reduce cycle times and boost productivity without compromising finish. This insert system is built for metric/ISO applications and supports flexible setups with multiple inserts in a compact cutting diameter.

• Efficient spiral cutting for fast threading: The spiral geometry delivers smooth, stable cutting at higher feed rates, reducing machining time and improving overall throughput while maintaining a high-quality thread finish.
• Flexible insert capacity and precise indexing: Toolholders accommodate 1 to 9 inserts in a compact diameter, with a unique clamping method that ensures optimal indexability and minimizes vibration and chatter during operation.
• Durable MT7 TiN-coated inserts for broad material compatibility: MT7 sub-micron grade inserts with Titanium Nitride multi-layer coating (ISO K10–K20) provide wear resistance and consistent finishes across a wide range of materials.

Together, this spiral mill threading insert delivers reliable, repeatable results that improve workflow and reduce downtime. The robust coating and precise indexing translate to longer tool life and predictable performance in threading, roughing, and finishing tasks, helping you achieve precise threads and smooth surfaces with fewer passes and easier setups.