Carmex’s Thread Mills Mini Type with through coolant is a precision solid carbide cutter designed for small-diameter internal threading in pre-drilled holes. Built for UN-thread forms, it delivers reliable performance in tight spaces with efficient chip evacuation.

• Tool type: Solid carbide thread milling cutter (MTSB) with an internal coolant bore
• Coolant delivery: Through-tool coolant bore provides high-pressure liquid directly to the cutting edge, cooling the tool and aiding chip removal
• Thread forms supported: UNC, UNF, UNEF, and UNS threading standards
• Size and shank: No. 4 cutting diameter, 40 mm length; MT7 shank
• Cutting geometry: Optimized miniature thread-milling geometry for smooth traversal along the threading circle

The through-coolant design reduces heat buildup at the cutting edge, helping extend tool life and maintain consistent thread accuracy throughout the hole. With enhanced chip clearance and cooling, this cutter is well-suited for precise, durable threads in small diameters across demanding materials and applications, from mold making to precision mechanical assemblies.