The Carmex Screw Clamp Thread Turning External Holder (Left-Hand) is a precision tool holder built for external threading on CNC lathes and turning centers. With a robust clamp and compatible inserts, it delivers dependable accuracy for production threading tasks.

• OAL: 125 mm overall length for extended reach and rigidity
• Shank Size: 12 x 12 mm square shank for secure seating
• Left-Hand Configuration: Optimized for left-handed threading operations
• Insert Compatibility: Accepts ER and EL inserts; includes 11EL insert
• U-Type Insert Support: U-Type holders designed to accommodate U-Type inserts for enhanced performance
• Clamping System: Screw clamp mechanism delivers stable, repeatable grip
• Helix Angle: 1.5° helix angle to improve chip evacuation and cutting efficiency
• Construction: Rugged build for long life and steady cutting

This external thread turning holder provides predictable, repeatable external threading results with reduced vibration and improved surface finish. The left-hand configuration and secure screw-clamp ensure quick setup and reliable tool positioning, even when machining deep or long threads. Compatibility with ER/EL inserts (including 11EL) and U-Type inserts gives you flexible options for different thread profiles, materials, and cutting conditions. The 1.5° helix angle promotes efficient chip flow, minimizing chip packing and heat buildup for cleaner cuts and longer insert life.