Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - UNC - 7/16 x 14

When you need dependable, long-lasting threads for renewed performance, the Baer Heli Coil Tap is the precision tool that makes it happen. Specifically designed for UNC 7/16-14 holes, this Bottoming Tap (STI) prepares the bore so Heli-Coil wire thread inserts seat perfectly and deliver durable engagement every time.

Key features you can trust

• Bottoming tap (STI) design: cuts threads all the way to the bottom of a blind hole, ensuring the insert sits flush and the fastener engages with maximum thread depth. This is essential for clean, reliable repairs in recessed cavities.
• HSSG construction: built from robust high-speed steel (HSSG) to resist wear and maintain sharpness through repeated use, even in tougher metals. This helps deliver consistent thread quality across multiple repairs.
• Precisely matched to UNC 7/16-14: ensures correct thread pitch and diameter for common aerospace, automotive, and machinery applications, enabling seamless integration with standard inserts.
• Designed for thread inserts: ideal for creating clean, ready-to-receive bores for Helicoil and other standard wire thread inserts, supporting durable repairs and reinforced threads.

Why this tap stands out

• Unlike generic taps, the Baer Heli Coil Tap is purpose-built to pair with Heli-Coil-style inserts, delivering reliable depth and alignment so the repair lasts under repeated assembly and disassembly.
• The combination of a bottoming profile and hardened tooling minimizes burrs and misalignment, helping you achieve a true, round thread that accepts inserts consistently.
• Its 7/16-14 UNC specification covers a broad range of common fastener holes, making it a versatile addition to any toolkit focused on thread repair, restoration, and reinforcement.

Ideal for:

• Automotive enthusiasts, machinists, and repair technicians working on engines, transmissions, exhaust components, and chassis where worn or damaged threads need a durable fix.
• Pros restoring equipment with Heli-Coil or similar inserts to restore original strength without oversized repairs.
• DIYers tackling corrosion, stripping, or cross-thread damage where a reliable, professional-grade repair is required.

Practical usage tips

• Always deburr and clean the hole before tapping to ensure inserts seat squarely. Use a suitable lubricant to reduce friction and prolong tap life.
• Choose the correct pilot size for your material and drill the pilot to match the insert’s recommended dimensions to maintain concentricity.
• Tap straight, with steady pressure and a clean withdrawal to prevent thread damage and ensure uniform engagement depth for the insert.
• After tapping, inspect the hole for straightness and run a test insert to confirm proper seating and thread engagement before final assembly.

Whether you’re rebuilding a high-mileage engine, repairing a rugged machine housing, or reinforcing critical threaded joints, the Baer Heli Coil Tap delivers precision, durability, and confidence in every repair—so your inserts bite cleanly and your assemblies stay secure.