The Carmex Spiral Mill Threading Insert (Metric/ISO – H32I1.0ISOMT7) is a spiral milling and threading solution designed for a broad range of machining tasks. It’s ideal for shops that need fast, reliable threading and finishing across everything from small components on compact centers to heavy-duty work on high-power milling centers.

Its spiral flute design reduces vibration and chatter, enabling smooth cutting at higher feed rates and shorter cycle times. With a compact toolholder that holds 1 to 9 inserts in a small cutting diameter and a unique clamping method for optimal indexability, you get repeatable threading and steady finishes. In addition, MT7 Sub-Micron inserts with TiN multi-layer coating provide broad material compatibility and long wear life, ensuring consistent results on all workpieces.

• Spiral flute design for fast, smooth cutting: The spiral geometry enables smooth cutting at high feed rates, reduces vibration and chatter, and shortens cycle times for threading, roughing, and finishing passes.
• Flexible insert capacity with precise indexability: Spiral toolholders accommodate 1 to 9 inserts in a compact cutting diameter, and a unique clamping method ensures reliable indexing for repeatable, accurate threads and finishes.
• MT7 Sub-Micron TiN-coated inserts for universal materials: MT7 Sub-Micron Grade with TiN multi-layer coating delivers wear resistance across materials (ISO K10–K20), extending tool life and delivering consistent finishes in threading, roughing, and finishing work.

By using this spiral insert system, you gain faster cycle times, fewer tool changes, and dependable thread quality across materials. The TiN-coated MT7 inserts resist wear on steel, aluminum, and harder alloys, while the spiral geometry and robust clamping keep chatter low and finishes consistently clean—helping you meet tighter tolerances and ship parts faster.