Carmex Thread Mills Carbide Mini Type - UN (UNC UNF UNEF UNS) - No. 4 x 40 - MT7

The Carmex Thread Mills Carbide Mini Type MT7 is a compact, high‑performance threading tool designed to cut UN threads (UNC, UNF, UNEF, UNS) with a No. 4 x 40 size and MT7 shank. Built for both internal and external threads, it delivers precise results across a wide range of materials and applications.

• Thread forms supported: UN family (UNC, UNF, UNEF, UNS) for versatile threading in one tool
• Size and interface: No. 4 x 40 cutting geometry with MT7 shank; mini-type design for tight spaces
• Material and coating: Carbide grade MT7 with sub-micron precision and a Titanium Aluminium Nitride multi‑layer coating (ISO K10–K20)
• Cutting geometry: Spiral flutes for smooth, uninterrupted cutting; multi‑flute configuration (3–5 flutes) for efficient material removal
• Performance at speed: Engineered for medium to high cutting speeds with short machining times
• Deep-hole capability: Coolant through the flutes provides effective cooling and chip evacuation in deep holes
• Durability: Special triple coating and optimized profile extend tool life and resist wear
• Hard materials: Machining of hardened materials up to 45 HRc without excessive wear
• Practical versatility: One tool can produce a wide range of thread pitches and handles both external and internal threading
• Reliability: Short profile reduces cutting forces and minimizes the risk of tap breakage

This tool is ideal for manufacturers and machinists aiming to simplify tooling without compromising thread quality. Use it to create precise UN threads in difficult materials, achieve clean internal and external thread forms in a single pass, and reduce cycle times thanks to its high‑speed capability and efficient coolant through design. Whether assembling precision components, molds, or automotive parts, this MT7 thread mill delivers dependable performance, long tool life, and consistent thread accuracy across a range of applications.