Carmex Thread Turning Internal Insert - UNJ (UNJC UNJF UNJEF UNJS) - Right Hand - 16IR18UNJK20

Carmex Thread Turning Internal Insert is a precision cutting tool designed for internal threading on lathes. Optimized for right-hand UNJ threads, this insert covers UNJC, UNJF, UNJEF, and UNJS standards in a single, versatile geometry, making it ideal for shops that regularly work with multiple thread forms.

Configured as a 16IR18UNJK20 insert, its laydown triangular geometry delivers stable cutting, reliable chip control, and consistent thread formation across a wide range of materials and production demands—from quick-turn jobs to high-volume manufacturing.

• Broad UNJ compatibility: Supports UNJC, UNJF, UNJEF, and UNJS thread standards in one insert, reducing tool changes and boosting job flexibility.
• Right-hand internal threading design: Engineered specifically for right-handed threads, delivering predictable engagement and easier setup on common lathes.
• Laydown triangular geometry for stability and finish: Provides stable contact, helps control chip flow, and supports consistent thread quality across materials.

With this insert, you can streamline internal threading workflows, minimize downtime from tool changes, and achieve reliable, repeatable UNJ thread results. The combination of a compact size (16IR18UNJK20), right-hand orientation, and robust geometry helps you finish more parts with fewer inserts, improving overall productivity and outcomes.