The Carmex Vertical Milling CMT Three Flute Insert for Groove Milling (C18W171) is a ground-profile, indexable insert designed for precision work in vertical milling. It covers a wide range of tasks—from threads and grooves to chamfers—when paired with compatible toolholders. The three-flute design and robust construction are intended to deliver reliable performance across demanding milling applications.

• Ground profile for precision and finish: High-precision ground inserts deliver excellent surface quality and consistent results, even when pushing cutting parameters.
• Universal threading and groove capability: One insert handles right- or left-hand threads as well as groove milling and chamfer operations, reducing tool changes and inventory needs.
• Rigid clamping with Weldon shank and coolant bore: Solid, repeatable clamping improves setup accuracy, while toolholders with Weldon shank and a coolant bore support consistent performance; chamfer inserts are also available.

Designed for reliability and versatility, this insert helps streamline your milling workflow—from setup to parts finished. It supports high-quality finishes, reduces downtime through multi-task capability, and provides predictable tool life, making it a solid choice for production shops, job shops, and demanding workshop environments.