Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - UNF - 1/2 x 20

The Baer Heli Coil Tap is the precision tool you rely on for impeccable thread repairs and reinforcements with Heli-Coil wire thread inserts. Built for durability, it delivers consistent thread depth in UNF 1/2 x 20 holes, making blind-hole repairs faster, cleaner, and more repeatable.

• Bottoming design for full thread depth. Specifically engineered to cut threads all the way to the bottom of the hole, ensuring complete engagement with the Heli-Coil insert.
• UNF 1/2 x 20 compatibility. Matches standard fastener threads so you can restore strength where it matters most.
• Durable HSSG construction. Built to resist wear and maintain cutting precision through repeated use on steel, cast iron, and aluminum components.
• Cleaner, burr-free results. Optimized flute geometry minimizes chatter and chips, leaving smooth thread surfaces that accept inserts with minimal effort.
• Versatile use cases. Ideal for restoring stripped threads in automotive components, machinery housings, and maintenance repair tasks where reliable reinsertion matters.
• Practical workflow tips. Apply light cutting oil, feed the tap steadily with even pressure, and back off to clear chips to prevent built-up debris from compromising thread quality.

With the Baer Heli Coil Tap, you gain a tool that not only restores threads but also reinforces delicate or damaged threads for long-term reliability. If you’re building, repairing, or maintaining equipment that relies on strong, repeatable thread engagement, this bottoming tap is the steady performer your workshop needs.