Engineered for precision internal threading, the Carmex Thread Turning Holder Standard – Internal, Right Hand is built for machinists who demand consistent, repeatable internal threads. With a 170 mm overall length and compatibility with 16IR inserts, it delivers reliable reach and accurate performance in tight bores.

• Right-Hand internal threading: Optimized for producing right-hand internal threads with clean, repeatable profiles.
• 170 mm overall length (OAL): Long, rigid reach that helps access deeper bores without sacrificing stability.
• 16IR insert compatibility: Designed to accept standard 16IR internal threading inserts for dependable cutting geometry.
• 20 mm shank size: Sturdy 20 mm shank for firm mounting on typical tool posts and turning setups.
• U-Type holder compatibility: Built to fit U-Type inserts, ensuring secure seating and precise alignment.
• 1.5° helix angle: Helix angle tuned to improve chip evacuation and reduce cutting forces during threading.

This holder is designed to deliver reliable internal threads in challenging bores, supporting smoother tool life and consistent finishes across jobs. The long reach, secure insert interface, and optimized helix angle work together to minimize tool deflection and rework, making it well-suited for precision manufacturing tasks in automotive, hydraulic, and general engineering components where accurate internal threads matter.