The Carmex SRH Toolholder With Internal Coolant Bore (SRH19-3) is a precision spiral mill-threading toolholder designed for professionals who need reliable threading and milling performance across a broad range of applications. Ideal for both small-component work on compact machining centers and heavy-duty milling on high-power machines, it helps you achieve consistent finishes with fewer tool changes.

Featuring a spiral design, this toolholder delivers smooth cutting at higher feed rates, helping to reduce cycle times while maintaining a high-grade finish on threading, roughing, and finishing passes. Its compact insert capacity and robust clamping ensure dependable indexability, supporting versatile use from delicate components to demanding production runs.

• Internal coolant bore: Delivers coolant through the tool for improved heat management and stable cutting performance during threading and milling tasks.
• Spiral cutting efficiency: Enables smooth, high‑feed cutting that lowers machining time and expands the range of compatible machines—from small centers to heavy‑duty mills.
• 1–9 insert capacity with optimized indexability: Holds 1 to 9 inserts in a compact diameter with a unique clamping method for reliable indexability, reduced vibration, and a consistent finish across threading, roughing, and finishing. Inserts are available in MT7 Sub‑Micron Grade with TiN multi‑layer coating (ISO K10–K20) for versatile material compatibility.

This combination of internal coolant delivery, efficient spiral geometry, and precise indexability makes the SRH19-3 a dependable choice for production environments that demand repeatable results, minimal downtime, and high-quality finishes across a variety of materials and applications.