The Carmex Spiral Mill Threading Insert (Metric/ISO) is a precision spiral milling solution designed to deliver smooth, efficient threading across a wide range of machines. It’s ideal for professionals seeking faster cycle times without compromising accuracy—from small-part work on compact machining centers to heavy-duty threading on high-power mills.

Its spiral fluted holders accommodate 1 to 9 inserts in a compact cutting diameter, and a unique clamping method ensures optimal indexability. The spiral design minimizes vibration and chatter, producing a consistently high-grade finish during threading, end milling roughing, and finishing operations. Inserts are MT7 Sub-Micron Grade with Titanium Nitride multi-layer coating (ISO K10–K20), a general-purpose specification that performs reliably with all materials.

• Efficient high‑feed threading: The spiral geometry enables smooth cutting at high feed rates, reducing machining time and boosting productivity across both small and large milling setups.
• Compact, indexable inserts: Spiral fluted toolholders hold 1–9 inserts in a small cutting diameter, with a unique clamp that guarantees reliable indexability and fast insert changes with minimal downtime.
• Durable MT7 inserts with TiN coating: Sub-Micron MT7 grade with multi-layer Titanium Nitride coating delivers excellent wear resistance and a consistent, high-quality finish for threading, roughing, and finishing on all materials.

This combination helps you complete jobs faster, maintain tight tolerances, and achieve repeatable results. By reducing vibration, enabling quick indexing, and delivering durable finishes, the Carmex Spiral Mill threading insert supports smoother workflows, less downtime, and dependable performance across a wide range of milling and threading applications.