The Carmex Unified TiAlN-coated carbide threading insert (21E10UN) is a versatile solution designed for machinists and fabrication shops that need reliable threading across a wide range of profiles. Built to streamline tooling, it covers most common thread forms with a single insert family.

• Coating & material: TiAlN-coated carbide for enhanced wear resistance and heat tolerance, extending tool life in demanding threading operations.
• Five length options: Available in 5 lengths from 12 mm to 40 mm to suit different depths of cut and holder configurations.
• Pitch range: Capable of handling pitches from 0.5 mm (32 TPI) to 6.0 mm (4 TPI) for both fine and coarse thread work.
• Double‑sided cutting edges: Each insert provides two cutting edges (except for BSPT/NPT/NPTF/American Buttress/API RD standards), maximizing usable life per edge.
• Internal & external versatility: For many thread profiles, the same insert can machine both internal and external threads, reducing tool changes and stocking needs (note: ISO/UN/NPSM/UNJ/Acme may require different considerations).
• Unified thread designation: Designed to support Unified threading practices with a standardized 21E10UN code for consistent, predictable results.

This insert is ideal for production environments that require flexibility, consistency, and efficient tooling. Use it for a broad range of components—from shafts and nuts to fittings and housings—where multiple thread forms are encountered. The combination of a TiAlN coating, multiple length options, and dual cutting edges helps you achieve accurate thread profiles with fewer tool changes, improving throughput and part-to-part consistency.