Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - UNC - 1.1/2 x 6

Baer Heli Coil Tap — the specialized bottoming tap designed for precision thread repairs and secure wire thread insert installations. Crafted to form clean UNC threads for 1-1/2" diameter, 6 TPI, this tap is the reliable foundation you need whenever you’re incorporating Heli-Coil style inserts into metal parts. Built to support durable, repeatable repairs, it’s a must-have for any shop that demands strong, long-lasting threaded connections.

Key benefits at a glance

• Bottoming geometry for full-depth threading: reaches the bottom of blind holes, ensuring the entire thread length has grip and the insert seats flush and securely.
• HSS-G construction: high-speed steel with robust edge retention and wear resistance, designed to stand up to repeated use in demanding materials.
• Precise UNC 1-1/2 x 6 fit: tailored for classic imperial thread standards, delivering consistent, repeatable results that support reliable insert installation.
• Square-end design for traditional tapping: compatible with standard tap wrenches, promoting steady alignment and controlled chip clearance during cutting.
• Versatile for repairs and reinforcement: ideal for restoring damaged threads or creating robust mounting points where coil inserts are desired for vibration resistance and load distribution.

Why this tap helps you solve real-world problems

When threaded holes strip or wear, coil inserts restore strength and distribute load more evenly than a single-thread repair. The Baer Heli Coil Tap ensures you can:

• Repair stripped UNC threads in critical components like engine housings, brackets, and machinery mounts with confidence.
• Create reliable threads for bolt-in coil inserts that resist loosening under vibration and high torque.
• Maintain accurate thread depth and alignment, reducing the risk of cross-threading and improving insert seating.

Practical usage tips

• Use a compatible cutting fluid to minimize heat and extend tap life.
• Clamp securely and maintain perpendicular alignment to the workpiece for clean, true threads.
• Turn the tap steadily with light, even pressure; back off periodically to break chips and prevent binding.
• After tapping, clean the hole thoroughly before installing the coil insert to ensure optimal engagement.

Who benefits most

This tap is an essential tool for machinists, maintenance technicians, and automotive/industrial fabricators who routinely repair or reinforce threaded holes with wire thread inserts. If your workflow involves restoring damaged threads or creating durable mounting points for high-stress hardware, this tap delivers consistent performance and dependable results.