Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - UNF - 1 x 12

Baer Heli Coil Tap – the precision bottoming tap designed to accompany wire thread inserts and keep repaired threads strong, reliable, and ready for bolt engagement. This tap is purpose-built for UNF threads and the 1 x 12 size, giving you clean, true threads that accept Heli-Coil and compatible inserts with confidence.

The BaerCoil tapping solution is engineered for durability in demanding environments. Its bottoming geometry ensures full-depth engagement, so you restore original thread strength every time. When you tap with this tool, you create a precise, consistent internal thread that partners perfectly with the insert, reducing the risk of cross-threading or partial engagement that can compromise load capacity. Bottoming taps are the workhorse for blind or recessed holes where you need threads that reach the bottom of the bore.

Key benefits and how they matter:

• Accurate UNF threads, every time: The tap’s geometry is tuned for UNF 1 x 12 applications, giving you reproducible, spec‑compliant threads that align flawlessly with standard wire thread inserts. This minimizes rework and ensures a reliable repair or reinforcement.
• Full-depth engagement with bottoming design: By design, it cuts threads all the way to the bottom of the hole, which is essential for corrosion resistance, load transfer, and long-term insert retention.
• Compatibility with wire thread inserts: BaerCoil taps are designed to work with Heli-Coil inserts and are compatible with inserts from other manufacturers, offering flexibility when you’re stocking tools and parts.
• Durable construction for busy shops: Built to withstand daily use in automotive, machinery, and fabrication workflows where reliable repairs matter most. The tool supports repetitive insert installations without compromising performance.

Who this is for

• shop technicians performing thread repair on aluminum, steel, and other common engineering metals
• maintenance crews restoring stripped or damaged threads in components like housings, engine blocks, brackets, and fixtures
• hobbyists and professionals who rely on durable thread repairs that won’t loosen under vibration

Practical use scenarios

• Repair a damaged UNF threaded hole in an engine component and restore the original bolt engagement with a BaerCoil insert
• Reinforce worn threads in machinery housings to extend service life and prevent costly part replacements
• Prepare a clean, true thread path in cast or machined parts before inserting a wire thread insert for high-load applications

Tips for best results

• Follow the insert manufacturer’s recommendations for drill size and tapping depth to ensure optimal insert seating and load capacity. In practice, proper drilling and tapping are critical to avoid undersize threads or over-tapping.
• Use proper cutting fluid and steady, straight alignment to maintain thread integrity and surface finish.
• After tapping, clean the hole thoroughly to remove chips before inserting the coil insert for a secure, lasting fit.

With the Baer Heli Coil Tap in your toolkit, you’ve got a precise, purpose-built solution for clean tapping and durable thread restoration. It’s the reliable partner you need when every thread matters—whether you’re rebuilding equipment, performing field repairs, or maintaining precision machinery.