Baer Heli Coil Tap - Wire Thread Insert - Spiral Flute Tap (STI) - Metric - M4 x 0.7

The Baer Heli Coil Tap is engineered for precision thread repair and reinforcement using wire thread inserts. When you need to restore damaged internal threads or prepare a robust mounting hole for high‑stress fasteners, this spiral flute tap delivers reliability and long service life. Designed for metric threads, it creates clean, accurate M4 x 0.7 threads ready for Heli‑Coil style inserts in a variety of materials—from aluminum to steel.

What makes the Baer Heli Coil Tap a standout choice for professionals and serious DIYers alike:

• Spiral flute (STI) design facilitates rapid chip evacuation, minimizing clogging and reducing the risk of cross‑threading. The result is smoother tapping and a cleaner thread ready to accept a coil insert.
• Optimized for Heli‑Coil style wire thread inserts—the tap produces threads that lock in inserts securely, delivering reinforced threads that resist stripping in high‑load applications.
• Metric precision for M4 x 0.7 threads—specifically engineered to match common repair scenarios in automotive, electronics housings, and machinery components where reliable, standardized threads matter.
• Durable construction—crafted to endure repeated use in demanding environments, providing dependable performance across multiple repair jobs without losing accuracy.
• Versatile application range—effective in a variety of metals and thicknesses, from soft aluminum to harder alloys, making it a go‑to tool for thread repairs and reinforcements.
• Practical maintenance tips—use a light cutting lubricant to reduce heat, ensure steady, square tapping pressure, and back off regularly to clear chips for best results.

This tap is ideal for shop technicians, machinists, and DIY enthusiasts who regularly encounter stripped or damaged threads and need a dependable method to re‑establish strong, reusable threads. By choosing the Baer Heli Coil Tap, you invest in precise threading, durable repairs, and a reliable path to extending the life of fastened assemblies—without resorting to costly replacements or improvisation.