The Carmex Thread Turning Holder Standard — Internal, Right Hand, 170 mm OAL — is built for machinists who need precise, reliable internal threading in deep bore applications. Designed to work with a 16IR insert and a 20 mm shank, it delivers consistent performance in demanding metalworking environments.

• Right-Hand internal threading holder: optimized for right-handed thread profiles and predictable cutting action to produce clean internal threads.
• 170 mm overall length (OAL): extended reach to access deeper holes and challenging bore geometries without repositioning.
• 20 mm shank size: sturdy mounting interface compatible with standard tool holders for rigidity and reduced deflection.
• Accepts 16IR insert: designed to secure the 16IR threading insert for precise internal thread geometry and reliable wear performance.
• Screw clamp design: ensures secure seating of the insert, minimizes runout, and supports repeatable threading results.
• U-Type insert compatibility: engineered to work with U-Type inserts for secure fit and alignment in tight internal operations.
• 1.5° helix angle: tuned to improve chip evacuation and reduce cutting forces, yielding smoother threading and longer tool life.

This holder is ideal for production environments and job shops that routinely machine internal threads in components such as housings, engine blocks, and fittings. The combination of long reach, robust clamping, and compatibility with industry-standard insert geometries translates to faster setups, fewer reworks, and more consistent thread quality across parts. Whether you’re finishing blind bores or threading through walls, this Carmex holder provides the dependable performance needed to keep projects on schedule.