Carmex Spiral Mill Threading Insert - Unified - H45I4UNMT7 is a spiral milling and threading insert system designed for a wide range of machines and operators—from engineers and buyers to tradespeople and hobbyists. It enables efficient threading and end-milling with a focus on productivity and consistent results.

• Smooth, high-feed cutting: The spiral design delivers a smooth cutting operation at a high feed rate, helping reduce machining time and improve throughput on every job.
• Flexible, multi-insert design: Spiral fluted toolholders hold 1 to 9 inserts in a compact cutting diameter, supporting a broad spectrum of parts—from small components on compact centers to heavy-duty work on powerful milling machines—with a unique clamping method for optimal indexability.
• Durable MT7 inserts with TiN coating: MT7 Sub-Micron Grade inserts with Titanium Nitride multi-layer coating (ISO K10–K20) provide wear resistance across materials, delivering reliable performance and long tool life.

This tooling combination is crafted to improve workflow reliability and finish quality across threading, roughing, and finishing operations. With a focus on stability, durability, and easy indexability, it helps you achieve consistent results, reduce downtime from tool changes, and maintain tight tolerances across a variety of machining tasks.