The Carmex Swiss Line Insert - Threading (UN) - Left Hand - GT19L40UNBLU is a precision, indexable threading tool designed for Swiss-type lathes and automatic turning machines. Built for high-volume production, it enables efficient external threading, grooving, profiling, and general turning from a compact, dedicated tool system.

Designed for left-hand UN threading, this insert combines grounded cutting edges with tool-holding reliability, letting you refresh the cutting edge directly on the machine. The result is consistent thread quality, reduced downtime, and steady throughput in demanding Swiss-type operations.

• Grounded cutting edges: Maintain sharp, stable performance for clean finishes and reliable thread turning across high-volume cycles.
• Inserts indexed directly on the machine: Quick edge refresh without removing the tool, minimizes setup time and maximizes productive machining time.
• Coated holders provide abrasion resistance: Hardened coatings protect the holder against wear, extending tool life and preserving accuracy in tough materials.

This solution helps shop floors improve workflow by delivering repeatable threading results, faster changeovers, and longer tool life. With on-machine indexability and durable coatings, you can achieve consistent performance, lower part-costs, and improved overall efficiency in Swiss-type turning applications.