The Carmex Thread Turning Internal Insert – UN (UNC, UNF, UNEF, UNS) Left Hand, 08IL28UNBMA, is part of our industry-leading range of thread turning inserts. These high-quality laydown triangular inserts are designed to cover the majority of UN thread standards in one tool, delivering dependable performance from basic to demanding applications.

• Universal UN Thread Compatibility: Covers UNC, UNF, UNEF, and UNS with a single insert, reducing tool changes and simplifying inventory so you can keep production moving smoothly.
• Left-Hand Internal Threading Capability: Specifically engineered for left-hand internal threads, enabling complete UN-threading tasks with one insert family and easier setup.
• Durable Triangular Laydown Insert: Multiple cutting edges and robust geometry provide longer tool life and stable, repeatable thread quality across a wide range of materials and applications.

This insert helps you streamline internal threading workflows, minimize tool changes, and maintain consistent thread accuracy across both simple and complex jobs. Built for reliability in busy shops, it supports efficient setups, durable performance, and dependable results from start to finish.