Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - BSF - 7/16 x 18

Baer Heli Coil Tap is the go-to tool for precise, dependable internal threads when you’re repairing or reinforcing threaded holes with HeliCoil wire inserts. This Bottoming Tap (STI) is specifically sized for BSF 7/16 x 18, crafted to deliver clean engagement every time and to support durable, long-lasting fastener performance in demanding applications.

Why the Baer Heli Coil Tap stands out

• Bottoming tap design for full-depth threads — reaches all the way to the bottom of blind holes, delivering complete thread engagement and a solid foundation for helicoil inserts.
• BSF 7/16 x 18 compatibility — precisely matched to standard British Fine thread specifications, enabling reliable repairs in legacy equipment and aftermarket builds alike.
• Premium HSS-G construction — engineered for durability and heat resistance, so it stands up to repeated use in steel, cast iron, and alloy workpieces.
• Sharp, precise geometry — engineered to produce clean, burr-free threads that thread smoothly into helicoil inserts and resist cross-threading during install.
• Designed for helicoil systems — tailor-made to create the correct thread profile for Baer’s Heli Coil wire thread inserts, delivering consistent grip and reliability.

Ideal use cases

• Repairing stripped or damaged internal threads in automotive blocks, housings, and cylinder heads where helicoil inserts restore original strength.
• Reinforcing critical threaded holes in equipment where repeated assembly and disassembly demand robust, vibration-resistant threads.
• Restoring worn BSF threads in machinery, tool bodies, and structural components where a compact, bottoming-tap solution is required.
• Field service and shop environments where quick, dependable thread restoration with helicoil inserts reduces downtime.

Practical guidance and best practices

To maximize performance, pair the Baer Heli Coil Tap with compatible helicoil inserts and the correct helicoil size for the hole. Use a quality cutting fluid or tapping lubricant, keep the workpiece well-supported, and maintain a steady, clockwise feed to achieve true thread symmetry. After tapping, clean the hole thoroughly before winding in the helicoil insert to ensure even seating and long-term grip.

Specifications at a glance

• Product: Baer Heli Coil Tap
• Function: Bottoming Tap for wire thread insert installations
• Thread compatibility: BSF 7/16 x 18
• Material: HSS-G (high-speed steel, ground for precision)
• Application: Internal thread creation in preparation for Heli Coil/HeliCoil inserts
• Designed for durability and repeatable performance in a range of metals

When you’re rebuilding or reinforcing critical threaded joints, the Baer Heli Coil Tap delivers the precision and reliability that professionals rely on. It’s a focused, purpose-built tool for creating strong, repairable threads that stand up to real-world use, making helicoil installations faster, more consistent, and more trustworthy.