Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - BSW - 5/16 x 18

Baer Heli Coil Tap is the precision tool you reach for when thread integrity matters. Designed specifically for creating strong, reusable threads with wire thread inserts, this bottoming tap (STI) tackles 5/16 x 18 BSW applications with confident efficiency. Built to withstand the demands of professional shop work, it delivers consistent, burr-free threads that form a reliable foundation for helicoil reinforcements in a range of materials.

Why this Heli Coil Tap stands out

What sets this tap apart is its combination of durable construction and thoughtful geometry that works hand-in-hand with helicoil inserts. The bottoming design ensures threads reach the full depth in blind holes, so repairs aren’t shallow or prone to stripping. The result is durable, dependable threads that restore original strength and allow fast, repeatable service from one repair to the next.

Ideal use cases

• Repairing stripped or damaged threads in automotive components, engine blocks, transmission housings, and motorcycle parts.
• Reinforcing critical mounting holes in aluminum, magnesium, and softer metals where helicoil inserts are standard practice.
• Maintenance and repair work in machining shops, fabrication shops, and hobbyist workshops that demand precision and longevity.

How it works and practical guidance

This tap is designed to pair with wire thread inserts to restore original thread strength. Use with compatible helicoil systems to repair damaged threads cleanly and securely. For best results, lubricate the cut with a light tapping fluid, maintain straight alignment, and rotate steadily to the full depth. After tapping, install the helicoil insert according to the insert system’s instructions to complete the repair with maximum load-bearing capacity.

Key specifications at a glance

• Product type: Heli Coil Tap for wire thread inserts (bottoming tap)
• Thread specification: 5/16 in diameter, 18 threads per inch, British Standard Whitworth (BSW)
• Material and build: Robust design engineered for durability in metalworking environments
• Compatibility: Optimized for helicoil/wire thread inserts to restore and reinforce threads

For professionals who demand reliable, long-lasting thread repairs, the Baer Heli Coil Tap delivers precision, durability, and confidence in every cut. When you need to restore strength to worn holes and prevent future failures, this tap makes the difference between a quick fix and a enduring repair.