The Carmex Carbide Threading Insert - PG - TiAlN Coated - 21-18PG is a versatile carbide insert designed to handle a wide range of common thread profiles. Built for professional shops, it delivers reliable, repeatable threading performance with fewer tool changes.

• TiAlN coating: TiAlN coating boosts wear resistance and heat tolerance, helping edges stay sharper longer during high-speed threading.
• Double-edged design: The inserts are typically double-sided, offering two cutting edges for extended life; note that BSPT, NPT, NPTF, American Buttress, and API RD profiles may use a single edge.
• Five length options: Available in five lengths from 12 mm to 40 mm, providing the reach needed for different threading tasks.
• Broad pitch range: Depending on length, supports pitches from 0.5 mm (32 TPI) to 6.0 mm (4 TPI), covering most common thread forms.
• Internal & external threading compatibility: For many thread profiles, the same insert can machine both internal and external threads, with exceptions for ISO, UN, NPSM, UNJ, and Acme profiles.

This insert delivers practical value for both manual lathes and CNC setups, enabling consistent thread quality across a variety of materials. Its robust carbide substrate and TiAlN coating help sustain performance in demanding threading applications, reducing downtime and tool costs while helping you meet tight tolerances with confidence.