The Carmex Thread Turning External Insert is a versatile cutting insert designed for external threading on UNJ standards. Engineered for right-hand operations and a laydown triangular geometry, it delivers clean, accurate threads across a wide range of materials and applications.

With coverage for UNJ variants (UNJC, UNJF, UNJEF, UNJS), this insert is a practical choice for shops that run mixed jobs—from simple cleanup passes to more demanding thread profiles.

• Broad UNJ compatibility: Covers UNJC, UNJF, UNJEF, and UNJS thread forms, allowing one insert to handle multiple standards and reducing tool changes and inventory complexity.
• Durable laydown triangular geometry: Designed for stable engagement and efficient chip control, delivering consistent thread quality and longer tool life across a range of materials.
• Reliable performance for all job types: From simple cleanup cuts to complex, tight-tolerance threads, this insert maintains consistent results and a smooth finish with minimal rework.

This insert helps you streamline your threading workflow by reducing setup and tooling changes, delivering repeatable thread quality, and extending tool life. Whether you’re a professional machinist, a design engineer, or a hobbyist, you’ll gain confidence from predictable performance and fast turnaround on threading tasks.