The Carmex SRH Toolholder With Internal Coolant Bore - For Spiral Mill Threading Inserts - SRH13-1 is a precision toolholder engineered for spiral mill-threading inserts. It supports 1 to 9 inserts in a compact cutting diameter, enabling smooth cutting, higher feed rates, and shorter cycle times.

Designed for a wide range of applications—from small components on compact machining centers to heavy-duty milling on high-power machines—the SRH13-1 reduces vibration and chatter and delivers consistent finish. Inserts are MT7 Sub-Micron Grade with Titanium Nitride multi-layer coating (ISO K10-K20), offering reliable performance across materials.

• Efficient Spiral Cutting at High Feed Rates: The spiral geometry enables smooth cutting at higher feed rates, reducing overall machining time and improving productivity without sacrificing finish.
• Flexible Insert Capacity with Reliable Indexing: Spiral toolholders hold 1 to 9 inserts in a compact diameter, and the unique clamping method ensures optimal indexability, so you can quickly index inserts with confidence and consistent results.
• Internal Coolant Bore for Clean Cuts and Longevity: Internal coolant delivers coolant directly to the cutting edge, improving heat management, chip evacuation, and tool life for more stable threading and finishing.

With the SRH13-1, you gain reliable, repeatable threading and milling performance across materials. The combination of spiral flute design, robust clamping, and direct coolant delivery minimizes vibration, reduces downtime for tool changes, and supports high-precision finishes on both small parts and larger production runs. The MT7 TiN-coated sub-micron inserts provide durable wear resistance for long tool life and consistent results.