HELI-COIL Insert Installation Tool: Prewinder Type II, Helical Inserts
The HELI-COIL Prewinder Type II is a steel installation tool for helical inserts, designed for right-hand fine metric threads (MPN 4640-10). 3G Electric interprets demand and delivers this tool across 14 industrial…
SKU 3G-OTH-531080
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Product Description
The HELI-COIL Prewinder Type II is a steel installation tool for helical inserts, designed for right-hand fine metric threads (MPN 4640-10). 3G Electric interprets demand and delivers this tool across 14 industrial departments — and we supply far more than is listed. Our specialist depth in combustion, pumps and controls (as an authorised distributor for brands like FBR, Interpump, Riello, Beckett, Schneider, ABB, Siemens, SKF, Festo, and Fluke) anchors trust, ensuring you get the right answer, not just a catalog.
Frequently Asked Questions
What is the HELI-COIL Prewinder Type II used for?
The HELI-COIL Prewinder Type II is a steel installation tool used to prewind helical inserts into right-hand fine metric threads. It ensures proper insert alignment before final installation, commonly applied in automotive, aerospace, and industrial repair to restore stripped threads without replacing components.
What are the specifications of the HELI-COIL Prewinder Type II (MPN 4640-10)?
The HELI-COIL Prewinder Type II (MPN 4640-10) is a steel tool for helical inserts. It is metric, compatible with right-hand fine threads, and designed for helical inserts. 3G Electric supplies this tool across 14 industrial departments, with specialist depth in combustion, pumps, and controls.
Where to buy the HELI-COIL Prewinder Type II worldwide?
3G Electric supplies the HELI-COIL Prewinder Type II worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this installation tool to your facility. Contact us for availability and lead time on this HELI-COIL tool.
How to install helical inserts with the Prewinder Type II?
To install helical inserts with the Prewinder Type II, first select the correct metric fine-thread tool. Insert the helical insert into the tool's prewinder sleeve, then rotate the tool clockwise to wind the insert into the tapped hole. Follow the insert manufacturer's torque and depth guidelines for a secure repair.
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.









