Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - UNF - 1.3/8 x 12 G durable construction: Knurled body and

durable construction: Knurled body and robust ends provide a secure grip and dependable performance in daily use

87mm is a precision bore tool designed for accurate

Designed for machinists who need clean

Using the JBO UNEF GO Thread Ring Gauge streamlines quality control by providing immediate

Short flute length for rigidity: The 3-5xD flute length minimizes tool flex and deflection

Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - UNF - 1.3/8 x 12 G durable construction: Knurled body andWhen a critical thread is damaged, the Baer Heli Coil Tap delivers the precision and durability you need for reliable thread repair and reinforcement. This Bottoming Tap (STI) is specifically designed for UNF threads in 1 3 8" diameter holes with 12 threads per inch, making it the ideal companion for wire thread inserts and Heli Coil installations. Built to endure heavy use, it creates clean, full depth threads that restore strength where it counts.