The Carmex Screw Clamp Thread Turning External Holder is a precision toolholder designed for external threading on lathes and CNC machines. Built for right-handed thread turning, it delivers rigid support and repeatable performance in demanding production environments.

• Overall Length: 200 mm (OAL) for extended reach and stable engagement on long workpieces
• Handedness: Right-Hand configuration optimized specifically for external thread turning
• Shank Size: 40 x 40 mm square shank provides solid mounting and minimal deflection
• Insert Compatibility: Accepts ER and EL inserts, with support for U-Type inserts
• Clamp System: Screw clamp delivers secure, repeatable toolholding with fast setup and reliable retention
• Helix Angle: 1.5° helix angle promotes efficient chip evacuation and smoother cutting
• Insert Reference: Optimized for 27UER insert geometry to achieve accurate threading
• Construction: Robust, high-ridelity body designed to resist vibration and maintain rigidity during heavy threading

This holder enables consistent external thread turning on shafts, fittings, and fasteners with clean starts and uniform thread forms. The screw clamp design reduces setup time and enhances repeatability across production runs, while the 200 mm length and 40x40 shank contribute to core rigidity and stable cutting. With broad insert compatibility (ER/EL and U-Type) and a dedicated 27UER reference, you have the flexibility to select the optimal insert for your material, thread pitch, and finish, improving tool life and surface quality.