The Carmex MTZ Through-Coolant Carbide Thread Mills are precision tools designed for Whitworth threading in through-hole applications. Built for reliability and consistency, they deliver coolant right to the cutting edge for smooth, efficient thread milling even in challenging setups.

• Through-Coolant Delivery: coolant travels through the flutes directly to the cutting edge, improving heat management and extending insert life during threading.
• Carbide Construction: hard, wear-resistant carbide body provides long tool life and durable performance in tough materials.
• Thread Type: engineered for Whitworth BSW and BSF threads with a 1/4" or 3/8" diameter and 20 TPI, enabling standard Whitworth applications in a single tool.
• MT7 Shank: compatible with common MT7 tool holders for quick setup and stable accuracy on a wide range of CNC machines.
• Flute Geometry for Thread Milling: optimized flute design supports clean chip evacuation and precise thread formation in through-holes.
• Direct Chip Removal in Through-Hole Machining: through-hole threading benefits from efficient chip removal, reducing re-cutting and improving surface finish.
• Machine Compatibility: effective even on machines without external coolant systems, thanks to through-flute coolant delivery and robust carbide design.

Designed to meet the demands of precision threading in manufacturing and repair environments, these tools deliver consistent thread pitch, smooth finish, and reliable performance across through-hole projects. Whether you’re retrofitting older equipment or optimizing a modern CNC cell, the MTZ Through-Coolant Thread Mills offer a focused, practical solution for high-quality Whitworth threads with minimal setup fuss and downtime.