Baer Heli Coil Tap - Wire Thread Insert - Spiral Point Tap (STI) - Metric - M3 x 0.5

The Baer Heli Coil Tap is a precision tool designed to restore and reinforce threaded holes with the trusted Heli-Coil wire thread insert system. Engineered as a Spiral Point Tap (STI) for metric threads, this M3 x 0.5 tap creates clean, true threads that accept inserts with excellent pull-out resistance and long service life. Built for demanding shop environments, it delivers consistent results so you can trust every repair or reinforcement project.

Why this tap stands out

• Spiral Point STI geometry — optimized to push chips forward and maintain straight, accurate threads in through-holes, reducing chatter and binding during tapping.
• Metric precision — M3 x 0.5 thread pitch ensures compatibility with standard metric fasteners and Heli-Coil inserts for reliable, repeatable repairs.
• Durable construction — crafted from hardened steel for repeated use in metalworking, automotive, and maintenance applications without losing accuracy.
• Designed for insert compatibility — specifically paired with wire thread inserts to rebuild damaged threads and restore original strength in worn holes.
• Versatile reliability — performs consistently across a range of common materials and thicknesses, from aluminum to tougher steels, making it a go-to choice in repair and reinforcement work.

Practical uses and scenarios

• Repairing stripped or damaged threaded holes in brackets, housings, or mounting flanges where frequent assembly and disassembly are required.
• Reinforcing critical threaded entries that see vibration, heat, or load, so fasteners maintain clamping force over time.
• Preparing holes for Heli-Coil inserts in both new builds and refurbishment projects, ensuring a strong, durable thread for years of service.
• Maintenance-friendly solutions in machinery, automotive components, and equipment enclosures where downtime must be minimized.

How to maximize results

• Use with proper lubrication and the correct pre-drill size as specified for M3 x 0.5 tapping to achieve clean cuts and accurate thread profiles.
• Ensure the hole alignment is true and the tap enters square to avoid cross-threading and unnecessary wear.
• Pair the tapped hole with a matching Heli-Coil insert for optimal grip, load distribution, and long-term thread integrity.

Whether you’re a professional machinist, a maintenance technician, or a serious DIYer, the Baer Heli Coil Tap provides the dependable performance you need to repair, reinforce, and extend the life of threaded connections. It’s a focused tool designed for real-world use, built to deliver precise threads that stand up under real-world loads.