HELI-COIL Threaded Mandrel Tool: Prewinder Type III, Helical Inserts
The HELI-COIL Threaded Mandrel Tool is a Prewinder Type III installation tool for helical inserts, designed for inch-system coarse threads with right-hand thread direction. This steel tool (MPN 3724-12) enables…
SKU 3G-OTH-531019
Need installation or engineering help?
Ask a question
Product Description
The HELI-COIL Threaded Mandrel Tool is a Prewinder Type III installation tool for helical inserts, designed for inch-system coarse threads with right-hand thread direction. This steel tool (MPN 3724-12) enables precise insertion of HELI-COIL helical inserts into threaded holes, supporting reliable thread repair and reinforcement in industrial applications.
Frequently Asked Questions
What is the HELI-COIL Threaded Mandrel Tool used for?
The HELI-COIL Threaded Mandrel Tool (Prewinder Type III) is used to install helical inserts into threaded holes for thread repair and reinforcement. It is designed for inch-system coarse threads with right-hand direction, ensuring precise insertion in industrial maintenance and manufacturing applications.
What are the specifications of the HELI-COIL 3724-12 Prewinder Type III?
The HELI-COIL 3724-12 is a steel Prewinder Type III tool for helical inserts. It is compatible with inch-system coarse threads and right-hand thread direction. The tool is designed for helical inserts and supports reliable thread repair in industrial settings.
Where to buy the HELI-COIL Prewinder Type III tool worldwide?
3G Electric supplies the HELI-COIL Prewinder Type III tool (MPN 3724-12) worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this installation tool for helical inserts to your facility, ensuring reliable thread repair support.
How to install helical inserts with the HELI-COIL Prewinder Type III?
To install helical inserts with the HELI-COIL Prewinder Type III, first drill and tap the hole to the specified inch-system coarse thread size. Then, use the tool to wind the insert onto the mandrel and screw it into the tapped hole. Follow standard thread repair practices for best results.
Used in
Common applications for HELI-COILHELI-COIL Products
3G Electric supplies HELI-COIL installation tools for helical inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









