Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - BSW - 11/16 x 11

Baer Heli Coil Tap is the precise, reliable solution for repairing and reinforcing threaded holes with Heli‑Coil wire inserts. This bottoming tap is engineered to deliver clean, full-depth threads in a single pass, ensuring secure engagement when you install or restore coil inserts in a variety of metals. The 11/16 x 11 (BSW) sizing gives you a robust interface for common industrial and workshop applications, making it a must‑have for any repair toolbox.

Why this tap stands out:

• Bottoming depth for full engagement—the tap is designed to cut threads all the way to the bottom of the hole, which is crucial for reliable coil insert performance and load distribution.
• Durable HSS construction—crafted from high‑quality steel with a precision grind, delivering long life and consistent thread profiles under demanding use.
• Exact sizing for Heli‑Coil compatibility—11/16 inch diameter with 11 threads per inch in the British Standard Whitworth (BSW) form ensures a snug, accurate fit with standard coil inserts.
• Versatile material compatibility—ideal for repairing or reinforcing threads in steel, cast iron, and hardened alloys, and suitable for re‑threading components that will receive coil inserts.

How it solves real-world problems

When threads are damaged, stripped, or worn, a coil insert can restore strength far beyond the original material. This Bottoming Tap enables you to:

• Restore critical threads in engine blocks, transmission housings, and machinery housings where deep, uninterrupted threads are essential for secure fastener engagement.
• Prepare holes for fresh Heli‑Coil inserts in repaired components, providing vibration resistance and uniform load distribution in high‑stress environments.
• Repair bloated or oversized threads without sacrificing material integrity, saving parts from replacement and reducing downtime.

Practical guidance for best results

• Use with appropriate cutting fluid or light oil to minimize friction and heat buildup during tapping.
• Align the tap carefully with the hole to avoid cross‑threading; back off slightly if you feel binding, then resume with steady, even pressure.
• Tap once per hole with controlled depth, then clean the hole and install the coil insert according to the manufacturer’s instructions for optimal performance.
• Store with the other thread repair tools in a dry environment to prevent corrosion and maintain sharp threading edges.

Whether you’re a professional machinist, a maintenance technician, or a DIYer tackling a recovery project, the Baer Heli Coil Tap provides the dependable precision needed to rebuild threads and extend the life of essential components. Add this tap to your kit and experience consistently clean, bottomed threads that pair seamlessly with coil inserts for a durable, long‑lasting repair.