Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - UNC - 1/4 x 20

Baer Heli Coil Tap — Wire Thread Insert — Bottoming Tap (STI) — UNC 1/4 x 20 is a purpose-built tool for trustworthy thread repairs and durable reinforcements. Crafted with a focus on compatibility with Helicoil-style wire thread inserts, this tap creates clean, true threads that accept inserts with precision. It’s the reliable choice when you need to restore or upgrade critical fastener threads in a wide range of metal components.

• Bottoming design for full-depth threads — engineered to cut threads all the way to the bottom of the hole, ensuring inserts seat fully and resist pullout under load. This is essential for high-stress applications where return to service matters.
• Oversized for wire thread inserts — specifically sized to deliver a receiving thread that perfectly accommodates wire thread inserts, simplifying installation and maximizing holding power.
• UNC 1/4 x 20 compatibility — matches the common 1/4-20 UNC standard, making it suitable for a broad spectrum of parts and assemblies that rely on robust, standardized threads.
• Part of the BaerCoil repair toolbox — designed to work in tandem with BaerCoil/HSSG inserts for reliable thread repair and reinforcement, helping extend the life of worn or damaged components.
• Durable, shop-ready construction — built to withstand repeated use in professional shops and DIY setups alike, delivering consistent thread quality project after project.

This Heli Coil Tap is ideal for technicians and machinists who need a dependable method to restore stripped or damaged 1/4-20 threads and to prepare receiving threads for Helicoil-style wire inserts. Whether you’re repairing a choice zinc, aluminum, or steel housing, or equipping new components with lasting inserts, this tap provides the precision depth and clean thread profile that premium inserts demand. In practice, it helps reduce downtime, minimize thread failures, and extend the service life of critical assemblies.

How this tap supports a better repair workflow:

1. Identify the target hole and confirm the 1/4 x 20 UNC standard for your insert needs.
2. Prepare the hole, then align the Baer Heli Coil Tap squarely to start cutting true threads.
3. Use the bottoming reach to ensure the thread engagement extends to the full depth, creating a solid foundation for the insert.
4. Install the wire thread insert and verify seating with the surrounding material for a durable, vibration-resistant fastener path.

Note: For the most consistent results, pair this tap with compatible wire thread inserts and follow standard insert installation practices. The combination offers a proven approach to repairing damaged threads in through-holes and blind-hole applications alike.