The Carmex Spiral Mill Threading Insert is a metric/ISO threading system designed for precision and speed. It’s ideal for a wide range of users—from engineers and machinists to hobbyists—delivering fast, smooth threading and milling with a single tool arrangement.

Its spiral flute design reduces vibration and chatter, while the innovative clamping method ensures reliable indexability across 1 to 9 inserts in a compact cutting diameter. Inserts are MT7 Sub-Micron Grade with a Titanium Nitride multi-layer coating (ISO K10–K20), providing versatile, general-purpose wear resistance across materials.

• Smooth, high-feed threading and milling: The spiral geometry enables fast cutting action at high feed rates, cutting cycle times and improving throughput without sacrificing thread quality or finish.
• Flexible insert capacity in a compact form: Spiral toolholders can hold 1–9 inserts in a small cutting diameter, offering flexibility to switch between threading and light milling on the same setup.
• Durable MT7 TiN-coated inserts: Sub-Micron MT7 inserts with TiN coating deliver enhanced wear resistance and reliable finishes across a wide range of materials.

Together, this system helps you speed up production, reduce tool changes, and achieve repeatable, high-quality results across diverse applications. The combination of smooth cutting, flexible insert arrangement, and durable coatings gives you confidence to tackle both precise threads and finishing passes with consistent performance.