The Carmex Carbide Threading Insert for ACME threads (21I10ACME) is a TiAlN-coated carbide solution engineered for reliable, multi-profile threading. It’s built for professionals who want durable performance across common thread forms with fewer tool changes.

• TiAlN coating: Titanium aluminium nitride coating enhances wear resistance and heat tolerance for longer edge life in demanding machining conditions.
• Carbide body: Solid carbide construction delivers rigidity and precision for clean, accurate threads.
• Five length options: Available in 12 mm, 16 mm, 25 mm, 32 mm, and 40 mm lengths to fit a range of workpieces and depths.
• Double-sided edges: Most inserts have two cutting edges for extended use before indexing, reducing tool changes (excludes BSPT/NPT/NPTF/American Buttress/API RD variants).
• Internal & external capability: For many thread profiles, the same insert can machine both internal and external threads, increasing versatility (excludes ISO/UN/NPSM/UNJ/Acme profiles).
• Wide pitch range: Depending on length, supports pitches from 0.5 mm (32 TPI) to 6.0 mm (4 TPI) for broad threading applications.

This insert family helps shop floors streamline tooling—covering a broad spectrum of thread forms with one durable solution. The combination of TiAlN coating, carbide rigidity, and multiple lengths means you can tackle ACME and other common threads with consistent tolerance, fewer tool changes, and improved cycle times, whether you’re creating tight fits or clean, repeatable threads across materials.