Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - BSF - 3/16 x 32

Meet the Baer Heli Coil Tap — the dedicated bottoming tap built to deliver flawless thread repairs and rock-solid reinforcements for 3/16 x 32 BSF threads. Designed to work hand-in-hand with Heli-Coil wire thread inserts, this tap is the workhorse you reach for when a standard tap just won’t cut it.

• Bottoming precision for complete thread depth. The STI-style bottoming geometry reaches the full thread depth in blind holes, ensuring the Heli-Coil insert seats squarely and performs under load, not just at the surface.
• Exact 3/16 x 32 BSF specification. Engineered to the British Standard Fine thread standard, this tap creates clean, true threads that pair perfectly with compatible inserts and fasteners in classic and modern assemblies alike.
• Durable construction for repeatable use. Crafted for longevity, this tap holds its edge through repeated repairs in steel, cast iron, and alloy components, delivering consistent results across projects—from automotive preruns to maintenance work on machinery.
• Aligned with Heli-Coil systems for reliable reinforcements. Specifically tuned to work with standard Heli-Coil wire thread inserts, helping you restore original strength and torque rating without compromising thread integrity.
• Versatile tool for professionals and serious DIYers. Whether you’re a machinist, technician, or dedicated home shop hobbyist, this bottoming tap simplifies repairs that would otherwise require costly re-tapping or part replacement.

Why this tap matters: when threads wear, strip, or fracture, a properly tapped hole that accepts a durable Heli-Coil insert can restore the holding power of critical fastenings and prevent future failures. The Baer Heli Coil Tap is purpose-built to deliver that reliability with a clean build, precise engagement, and long-term durability—so you can repair, reinforce, and reuse with confidence.

Ideal use cases

• Repairing damaged internal threads in engine blocks, cylinder heads, and transmission housings where BSF-sized fasteners are specified.
• Reinforcing tapped holes in suspension components, brackets, and mounting plates that endure vibration and torque.
• Restoring worn threads in equipment housings and machinery where maintaining original thread geometry is essential for seal and load integrity.

Practical tips for best results

• Use the correct drilling and tapping sequence recommended for 3/16-32 BSF, and pair the tap with compatible Heli-Coil inserts for optimal performance.
• Apply a suitable cutting lubricant to reduce heat and extension wear, especially in harder materials.
• Keep the tap perpendicular to the workpiece and back off slightly after every full turn to clear chips and prevent cross-threading.
• After tapping, clean the hole thoroughly before installing the Heli-Coil insert to ensure a flush, secure fit.

Specifications at a glance:

• Tap type: Bottoming Tap (STI)
• Thread size: 3/16 x 32 BSF
• Application: prep for Heli-Coil wire thread inserts and thread repair
• Material/finish: engineered for durability and long life

Upgrade your repair toolkit with the Baer Heli Coil Tap and empower every threaded repair with precision, strength, and lasting reliability.