Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - Metric - M27 x 2

The Baer Heli Coil Tap is the trusted tool for precise thread repairs and durable reinforcements in metric size—designed to form clean, full-depth threads for Heli‑Coil wire inserts. If you’re restoring strength to worn or damaged holes, this bottoming tap (STI) delivers dependable performance when every thread counts.

• Cuts threads all the way through to the bottom of the hole, ensuring a flush seat for Heli‑Coil inserts and restoring original strength in critical joints.
• Engineered to the exact metric specification, providing consistent engagement with insert kits and reliable load transfer in service.
• Reduces chip buildup and promotes smooth cutting in a range of materials, from aluminum housings to steel assemblies.
• Built to withstand the demands of shop environments, delivering consistent performance over multiple repairs.
• Perfect for restoring stripped holes in engines, chassis, machinery housings, and other critical components where strong, serviceable threads are essential.
• Acts as the dedicated tapping stage to ensure correct alignment and seating of the repair coil, improving repair longevity and reliability.

Who benefits most: professional machinists, automotive technicians, maintenance teams, and DIY enthusiasts tackling damaged threads that must withstand vibration, torque, and repeated assembly/disassembly without losing strength. Use this bottoming tap to bring refurbished holes back to factory-like performance, then complete the repair with your preferred Heli‑Coil insert kit for a durable, reusable thread.

Pro tips for best results: select the correct drill size per your Heli‑Coil kit, use cutting fluid to cool and lubricate the tap, and follow with a proper insert installation to seal and distribute load evenly. With the Baer Heli Coil Tap in your toolkit, you’ll repair threads quickly, accurately, and with confidence.