The Carmex Unified TiAlN-coated carbide threading insert (model 21I14UN) is designed for machinists who need versatile, durable threading performance across the most common profiles. Built to handle both internal and external threads where appropriate, it minimizes tool changes and boosts productivity on a wide range of projects.

• Five available lengths: five lengths range from 12 mm to 40 mm to fit different depths and setups.
• Wide pitch compatibility: supports pitches from 0.5 mm (32 TPI) up to 6.0 mm (4 TPI) for many standard thread standards.
• Double-edged design: each insert is double-sided with two cutting edges to extend life (except for BSPT/NPT/NPTF/American Buttress/API RD forms).
• Internal & external threading capability: for many profiles, the same insert can machine both internal and external threads, simplifying tooling (exceptions include ISO/UN/NPSM/UNJ/Acme).
• TiAlN-coated carbide: TiAlN coating delivers enhanced wear resistance and heat tolerance for demanding materials and higher-speed operations.
• Unified geometry: the 21I14UN designation reflects a standardized approach to common threading tasks, providing reliable, consistent results across jobs.

This single, versatile insert helps you reduce tool changes, lower inventory needs, and achieve clean, accurate threads across a variety of machines and materials. The TiAlN coating and carbide construction are designed to maintain sharpness and stability under demanding conditions, making it a dependable choice for production work, maintenance, and precision machining where consistency matters.