Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - Metric - M33 x 3.5

The Baer Heli Coil Tap is the precision tool you reach for when you need to repair and reinforce internal threads with confidence. Designed as a robust bottoming tap (STI) for metric threads, this tap creates clean, accurate M33 x 3.5 threads that form a solid foundation for helicoil wire thread inserts. Built to endure demanding applications, it delivers reliable performance across metalworking, automotive, and industrial repair jobs.

Why this Heli Coil Tap stands out

• Bottoming design for full-thread engagement to the bottom of blind holes, ensuring every repair reaches maximum strength.
• Metric precision tailored to M33 x 3.5 helicoil insert systems, delivering consistent thread form ready for high-load fasteners.
• Premium materials engineered for durability in tough metals, with dependable cutting action and extended life between re-sharpening.
• Compatibility with wire thread inserts—paired with helicoil kits to restore weakened threads without sacrificing alignment or grip.
• Smooth operation in challenging alloys thanks to thoughtfully ground geometry that resists chatter and reduces tool wear.

Ideal for scenarios where threads have been damaged, worn, or stripped—especially in critical components where uniform load distribution matters. Use the Baer Heli Coil Tap to restore thread integrity in engine blocks, transmission housings, casings, and other metal assemblies that demand reliable, long-lasting threads.

Practical use and care

• Pair with the corresponding helicoil wire insert system to lock in repaired threads with superior resistance to stripping.
• Shield the workpiece with cutting fluid or light oil to minimize heat and extend tap life; avoid dry running.
• Verify the drill and tap size match your helicoil kit specifications to ensure proper thread form and insert seating.
• After use, clean debris from threads and store in a dry environment to prevent corrosion and maintain accuracy for future jobs.

Whether you’re a professional machinist, maintenance technician, or a serious DIYer tackling repair work, the Baer Heli Coil Tap for M33 x 3.5 delivers the precision, durability, and reliability you need to restore confidence in damaged threads and extend the life of critical components.