The Carmex Thread Turning Holder Standard - Internal - Left Hand is a precision tool holder designed for internal threading tasks, built to deliver consistent, repeatable results in long bore applications. Designed for left-hand threading, it pairs reliability with a secure interface for demanding machining operations.

• Type: Internal threading holder optimized for left-hand operations to match common internal thread directions.
• Length: 400 mm overall length (OAL) for extended reach into deep features and bores.
• Insert Compatibility: Accepts a 27IL insert for precise, repeatable threading performance.
• Shank Size: 60 mm shank size to fit standard toolposts and holders with robust support.
• Interface: U-Type holder designed to securely mate with U-Type inserts for a precise fit.
• Helix Angle: 1.5° helix angle engineered to improve chip evacuation and reduce cutting forces.
• Clamping System: Carmex screw clamp design provides quick, secure toolholding with reliable rigidity during cuts.

Whether you're manufacturing precise internal threads in automotive components, aerospace housings, or general precision fixtures, this holder delivers stable performance, easy setup, and predictable tool life. The combination of a long reach, left-hand threading capability, and a secure U-Type interface helps you achieve clean thread starts, consistent depths, and smooth finishes in challenging bores. Use with compatible 27IL inserts to maximize cutting efficiency and minimize downtime, ensuring production runs stay on schedule.