The Carmex Thread Turning External Holder (Left-Hand) is a precision tool holder designed for reliable external thread turning on lathes. It’s ideal for machinists and job shops that need consistent left-handed threading with solid clamping and stable performance.

• Left-Hand external thread turning holder: specifically configured to support left-handed threading operations with dependable alignment and grip.
• 200 mm overall length (OAL): ample reach for deep external threads while preserving rigidity during cuts.
• 40 × 40 mm shank: standard, sturdy shank size for compatibility with common toolholders and setups.
• Compatibility with 27EL inserts: optimized to hold 27EL inserts for precise external turning results.
• ER/EL insert compatibility: versatile compatibility with ER and EL inserts to suit different threading requirements.
• U-Type insert compatibility: accommodates U-Type inserts for specialized threading tasks and accuracy.
• 1.5° helix angle: designed to improve chip evacuation and cutting efficiency, enhancing surface finish and tool life.
• Screw-clamp design: secure, repeatable clamping that minimizes tool runout and ensures consistent performance across operations.
• Robust construction and clamping: engineered for rigidity and long-term reliability under demanding machining conditions.

This holder delivers tangible benefits in everyday external threading work: it helps maintain precise thread forms with reduced runout, supports a range of inserts for flexible parameter optimization, and offers quick, repeatable setup thanks to its screw-clamp mechanism. Use it for external thread turning on parts like fasteners, fittings, and other threaded components where left-hand threads are required. The combination of a long reach, solid grip, and optimized chip control makes it a dependable choice for production environments that demand repeatable accuracy and durable performance.