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 metric coarse right-hand threads (MPN 7751-5). 3G Electric interprets demand and delivers this tool across 14 industrial…
SKU 3G-OTH-531049
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Product Description
The HELI-COIL Prewinder Type II is a steel installation tool for helical inserts, designed for metric coarse right-hand threads (MPN 7751-5). 3G Electric interprets demand and delivers this tool across 14 industrial departments—and far more—with specialist depth in combustion, pumps and controls as a trust anchor, not a limit.
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 metric coarse right-hand 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?
The HELI-COIL Prewinder Type II (MPN 7751-5) is a steel tool for helical inserts. It is metric, compatible with coarse right-hand threads, and designed for helical insert types. The tool is manufactured by HELI-COIL and is used for prewinding inserts prior to final installation.
Where to buy the HELI-COIL Prewinder Type II worldwide?
3G Electric supplies the HELI-COIL Prewinder Type II (MPN 7751-5) to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery. Contact us to source this tool for your application across any region.
How to install a helical insert with the Prewinder Type II?
To install a helical insert with the HELI-COIL Prewinder Type II, first select the correct metric coarse tap and thread the hole. Then attach the insert to the prewinder tool, rotate clockwise to wind the insert into the hole until it sits below the surface. Finally, break off the tang using a tang break-off tool.
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.









