Carmex Carbide Threading Insert - UNJ - TiAlN Coated - 21E18UNJ

Carmex Carbide Threading Insert for UNJ threads is a TiAlN-coated, high-precision solution built for machinists who need reliable UNJ threading across the most common profiles. Designed for versatility in busy shops, it delivers consistent results with minimal downtime.

• Range and length options: Five lengths from 12 mm to 40 mm, covering a broad set of threading tasks.
• Coating and material: TiAlN-coated carbide insert for enhanced hardness, wear resistance, and longevity in demanding cutting environments.
• Double-sided edges: Two cutting edges per insert (except for BSPT / NPT / NPTF / American Buttress / API RD), reducing tool changes and extending productivity.
• Internal/External threading flexibility: For many profiles, the same insert can machine both internal and external threads, with exceptions for ISO / UN / NPSM / UNJ / Acme profiles.
• Pitch compatibility: Depending on length, supports pitches from 0.5 mm (32 TPI) up to 6.0 mm (4 TPI), enabling a wide range of UNJ and common thread forms.

This insert is engineered to streamline threading operations—from job-shop setups to high-volume production. The TiAlN coating helps maintain edge life under higher cutting speeds, while the carbide substrate provides the rigidity needed for clean, accurate threads. Ideal for CNC lathes and milling centers handling UNJ and other standard thread profiles, it minimizes tool swaps and delivers repeatable results across multiple jobs.