Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - Metric - M28 x 1.5

The Baer Heli Coil Tap is the precision tool you reach for when you need flawless thread repairs and reliable reinforcements. Precisely sized for metric M28 x 1.5 holes, this bottoming tap (STI) delivers clean, full-depth threads that let Heli-Coil wire thread inserts seat securely and perform under load. Built for demanding work, it turns worn or damaged threads into durable, repeatable fastener interfaces you can trust.

Why this Baer Heli Coil Tap stands out

• Metric accuracy with bottoming reach: M28 x 1.5 threading is cut all the way to the bottom of the hole, ensuring the insert seats correctly and bears load as intended.
• Dedicated for Heli-Coil inserts: Precisely aligned geometry supports smooth insert installation and consistent thread engagement across the repaired hole.
• Durable construction for repeat use: Manufactured with robust steel (engineered for longevity) to withstand the demands of repair work in metal components and assemblies.
• Versatile repair tool for multiple industries: Ideal for automotive, industrial machinery, aerospace maintenance, and general equipment repair where threaded holes must be restored or reinforced.

Practical use cases

• Repair stripped or damaged threads in engine blocks, cylinder heads, transmission housings, and oil pans where insert installation is required.
• Reinforce critical threaded holes that experience frequent disassembly, improving service longevity and maintenance intervals.
• Prepare clean, true threads for reliable Heli-Coil insert installation in aluminum, cast iron, and steel components.

How to use

• Drill the pilot hole to the size recommended for your M28 x 1.5 insert kit.
• Align the tap squarely with the hole axis to prevent thread misalignment.
• Apply light cutting lubricant and run the tap with steady, even pressure until bottoming depth is reached.
• Clean the hole thoroughly, then install the Heli-Coil insert as directed by the insert kit for a secure, load-ready thread.

Tips for best results

• Always deburr the entry and exit of the hole to minimize tap binding.
• Use proper tapping fluid to extend tool life and improve thread quality.
• Inspect the finished threads with a go/no-go gauge to confirm correct depth and pitch before inserting a fastener.

With the Baer Heli Coil Tap in your toolkit, you gain a predictable, repeatable process for restoring critical threads and enabling high-strength fastener performance. It’s the dependable choice for professionals who demand precision, durability, and confidence in every repair.