The Carmex MTZ Through-Coolant Carbide Thread Mill is engineered for precise Whitworth threading in through-hole applications. Designed for shops that need reliable performance even on machines without external coolant, this tool delivers coolant directly to the cutting edge for smoother, more efficient threading.

• Through-Coolant Flutes: Integrated coolant channels route fluid directly to the cutting edge, improving chip evacuation and reducing heat for consistent thread formation.
• Carbide Construction: High-hardness carbide provides exceptional wear resistance and long tool life under demanding threading conditions.
• Whitworth BSW/BSF Thread Forms: Optimized geometry tailored to standard Whitworth thread profiles for accurate, clean finishes.
• Two Size Options: Available in 1/2" and 3/4" variants to address common through-hole threading tasks (paired with a 13/16" x 12 TPI thread form).
• 13/16" Cutting Diameter x 12 TPI: Precisely sized to achieve the correct Whitworth thread profile with a 12 threads-per-inch pitch.
• MT7 Shank: Phosphate-minished MT7 shank ensures compatibility with a wide range of milling machines for solid rigidity during operation.
• Direct Chip Removal: Tool geometry supports easy chip evacuation from through holes, minimizing downtime and clogging.

This thread mill is ideal for through-hole assemblies in industries like automotive, hydraulics, and aerospace where Whitworth threads are common and coolant setups are limited. The combination of through-coolant delivery, robust carbide construction, and MT7 compatibility translates into reliable thread formation, improved surface finish, and longer tool life—even when machining challenging materials or tight tolerances. With its focused design for BSW and BSF threads, it offers a practical, high-performance threading solution that reduces rework and speeds up production.