The Carmex SRH Toolholder With Internal Coolant Bore is a specialized mounting solution for spiral mill-thread inserts, designed to deliver smooth, high‑efficiency cutting across a wide range of applications. Whether you’re threading small components on a compact machine or tackling heavier-duty milling on a high‑power setup, this toolholder supports consistent performance with its spiral geometry and precision clamping. The internal coolant bore helps keep inserts cool and flush during operation, contributing to cleaner finishes and longer tool life.

• Efficient spiral design for high-speed cutting: enables smooth cutting at high feed rates and reduces overall machining time, improving productivity on both small and large jobs.
• Flexible insert capacity with reliable indexability: supports 1 to 9 inserts in a compact cutting diameter, with a unique clamping method that ensures precise, repeatable indexing and minimal downtime.
• Durable coating compatibility and versatile materials: designed to pair with MT7 Sub-Micron Grade inserts featuring Titanium Nitride multi-layer coating (ISO K10–K20), delivering durable performance across a wide range of materials and threading finishes.

With the SRH19J-3, you gain a dependable toolholder that reduces vibration and chatter while delivering consistent finishes in threading, end milling, roughing, and finishing operations. The combination of spiral geometry, robust clamping, and internal cooling helps streamline setups, improve surface quality, and support repeatable results across diverse machining tasks.