The Carmex Unified TiAlN-coated carbide threading insert (12I28UN) is a versatile solution for machinists who need reliable, multi-profile threading in one tool family.

• Five-length lineup: Five lengths spanning from 12 mm to 40 mm provide broad coverage for the most common thread profiles and pitches.
• TiAlN-coated carbide: The TiAlN coating enhances hardness and heat resistance, extending insert life in demanding threading applications and higher-speed operation.
• Double-sided cutting edges: Each insert features two cutting edges for extended tool life and reduced downtime (note: BSPT/NPT/NPTF/American Buttress/API RD have exceptions).
• Internal & external threading compatibility: For many profiles, the same insert can machine both internal and external threads, reducing tool changes (exceptions include ISO/UN/NPSM/UNJ/Acme).
• Extensive pitch range: Depending on length, it handles pitches from 0.5 mm (32 TPI) to 6.0 mm (4 TPI), enabling a wide array of thread standards with a single insert family.

Designed to deliver consistent thread quality across profiles, this insert streamlines setups, minimizes tool changes, and provides reliable performance in standard turning and milling threading tasks. Its carbide foundation combined with a TiAlN coating supports sustained cutting performance, helping workshops achieve precise results with less downtime and lower tooling complexity.