The Carmex Carbide Threading Insert - UNJ, TiAlN coated, model 21I24UNJ is a versatile threading solution designed for professionals who machine UNJ and related thread forms. Built for durability and precise results, it covers a broad range of common thread profiles with a single, efficient insert.

• Five-length range: Available in five lengths from 12 mm to 40 mm to suit different hole depths and shoulders without changing inserts.
• Wide pitch compatibility: Supports pitches from 0.5 mm (32 TPI) up to 6.0 mm (4 TPI) to match a wide variety of standards.
• Double-sided cutting edges: Each insert typically has two cutting edges for extended life, improving productivity (exceptions apply for BSPT, NPT, NPTF, American Buttress, and API RD profiles).
• Internal & external threading capability: For many thread profiles, the same insert can machine both internal and external threads, offering flexibility and reducing tool inventory (note: ISO/UN/NPSM/UNJ/Acme profiles may require specific considerations).
• TiAlN-coated carbide construction: The TiAlN coating enhances wear resistance and heat tolerance, promoting longer tool life in demanding threading operations.

Designed for reliability in professional workshops, this UNJ-threading insert delivers consistent thread quality across common profiles. Its versatile length options, broad pitch coverage, and coating work together to reduce tool changes, speed up production, and simplify your threading workflow. Ideal for shops handling UNJ and related thread forms, it supports both routine and more challenging threading tasks with confidence.