HELI-COIL Insert Installation Tool: Prewinder Type II, Helical Inserts

The HELI-COIL Prewinder Type II is an installation tool for helical inserts. It prewinds steel inserts into inch-system fine-thread holes with right-hand threads, ensuring proper alignment before final insertion. This tool is used in industrial maintenance and repair applications across machining, automotive, and aerospace sectors.

The HELI-COIL Prewinder Type II (MPN 7552-7) is a steel installation tool for helical inserts. It is designed for inch-system fine threads with right-hand thread direction. The tool type is Prewinder Type II, compatible exclusively with helical inserts. It does not include the insert itself.

3G Electric supplies the HELI-COIL Prewinder Type II (MPN 7552-7) to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery for this installation tool. Contact us for availability and lead time to your location.

To install helical inserts with the HELI-COIL Prewinder Type II, first select the correct insert size for your inch-system fine-thread hole. Place the insert onto the prewinder tang, then rotate the tool clockwise to wind the insert into the tapped hole. Remove the tool and use a tang-break tool to snap off the drive tang.