The Carmex Thread Turning External Holder (Left-Hand, 150 mm OAL, 25x25 shank) is a precision tool holder crafted for reliable external thread turning on lathes and turning centers. It works with ER/EL inserts and U-Type inserts, offering versatile options for a range of threading applications.

• Left-Hand Configuration: Optimized for left-handed threading operations, aligning rotation and cutting for consistent results.
• Overall Length: 150 mm (OAL) provides the reach needed for longer workpieces while maintaining rigidity.
• Shank Size: 25 x 25 mm square shank ensures broad compatibility with standard tool holders and adapters.
• Insert Compatibility: Supports ER and EL inserts and is designed to accommodate U-Type inserts for specialized thread forms.
• Helix Angle: 1.5° helix angle aids chip evacuation and contributes to smoother cutting action.
• Clamping Design: Robust screw clamp delivers secure seating and repeatable performance under demanding cuts.
• Construction Focus: Built to withstand the stresses of external thread turning with dependable rigidity and stability.

With its proven clamp mechanism and thoughtful geometry, this holder helps you achieve accurate thread profiles with less tool deflection and consistent surface finish. The 1.5° helix angle enhances chip flow, reducing burrs and cutting temperature, while the broad 25x25 mm shank and 150 mm reach support stable, productive passes on longer workpieces. Whether you’re threading stainless steel, tool steel, or aluminum, this Carmex external holder delivers reliable performance, straightforward setup, and lasting value for both job shop runs and ongoing production workloads.