The Carmex Thread Turning Holder Through Coolant for internal threading is a precision tool designed for machinists performing deep, accurate internal threads. This left-hand (IL) variant is built for dependable performance in demanding applications, with a through-coolant design that supports efficient chip evacuation and consistent cooling.

• Through-Coolant Bore: Integrated coolant channel delivers fluid directly to the cutting edge to improve chip evacuation and thermal management during internal threading.
• Internal Threading Capability: Engineered for precise internal threads with versatility for both right-hand (IR) and left-hand (IL) threading applications via a secure screw clamp.
• Left-Hand Internal Threading (IL): Specifically configured to work with IL inserts, delivering clean, accurate left-hand threads in a variety of materials.
• 170 mm Overall Length (OAL): Extended reach for deep bore threading while maintaining rigidity and control.
• 20 mm Shank Size: Stable interface with compatible tool holders to ensure consistent cutting performance.
• 16IL Insert Compatibility: Designed to mate securely with 16IL inserts for dependable threading geometry and finish.
• Screw Clamp Connection: Positive, robust clamping minimizes insert movement and reduces the risk of tool dislocation during heavy cuts.
• Rugged Precision Construction: Built to perform reliably in demanding machining environments with repeatable results.

This holder helps you achieve precise internal threads with improved surface finish, thanks to optimized clearance and robust alignment. The through-coolant design reduces chip buildup and cools the cutting edge, extending insert life and lowering downtime. The screw-clamp system ensures a secure fit between bar and insert, so you can trust your internal threading operations from run to run across a range of bore sizes and materials.