Carmex Thread Turning Internal Insert is a laydown triangular insert designed for efficient internal thread turning across multiple UN thread standards. It’s built for a wide range of users—from professional machinists and engineers to job shops and hobbyists—offering a single, reliable solution for UNC, UNF, UNEF, and UNS internal threads. With its left-hand threading capability, this insert enables smooth, precise cutting in the required direction.

• Broad thread standard compatibility: Works with UNC, UNF, UNEF, and UNS internal threads, reducing the need for multiple inserts and simplifying inventory and setup.
• Versatile performance from basic to demanding applications: Suits a wide range of threading tasks, helping you complete more work with fewer tool changes and faster cycle times.
• Left-hand threading readiness with stable cutting action: Optimized for left-hand internal threads, delivering consistent engagement and a clean, reliable finish.

This insert is designed to streamline your threading workflow by covering several common thread standards with a single tool, enabling faster setups and fewer part reworks. The laydown triangular geometry provides stable cutting action and reliable performance across diverse applications, helping you achieve accurate, repeatable internal threads with confidence.