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

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

Brand
HELI-COIL
Item
Insert Installation Tool: Prewinder Type II, Helical Inserts
Category
Installation Tools for Helical Inserts
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Technical Specifications

HELI-COIL
Manufacturer Part Number
7751-5
Type
Helical Inserts, Steel
Tool Type
Prewinder Type II
System of Measurement
Metric
Compatible Insert Type
Helical Inserts
Compatible Thread Type
Coarse
Compatible Thread Direction
Right Hand
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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

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-COIL
Aerospace engine repair — HELI-COIL STI taps for M12x1.75 metric threads in aluminum alloy components
Automotive transmission rebuild — HELI-COIL STI taps for 7/16-14 UNC threads in cast iron housings
Industrial pump maintenance — HELI-COIL STI taps for #10-32 UNF threads in stainless steel pump bodies
Hydraulic cylinder repair — HELI-COIL STI taps for M6x1 metric threads in steel cylinder heads
General manufacturing — HELI-COIL STI taps for 9/16-18 UNF threads in machinery base plates

HELI-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.

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HELI-COIL Insert Installation Tool: Prewinder Type II, Helical Inserts, Steel (MPN 7551-2). Key specifications — Compatible Insert Type: Helical Inserts; Compatible Thread Direction: Right Hand; Compatible Thread Type: Coarse; System of Measurement: Inch; Brand: HELI-COIL; Tool Type: Prewinder Type II.
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HELI-COIL Insert Installation Tool: Prewinder Type II, Helical Inserts, Steel (MPN 7551-2). Key specifications — Compatible Insert Type: Helical Inserts; Compatible Thread Direction: Right Hand; Compatible Thread Type: Coarse; System of Measurement: Inch; Brand: HELI-COIL; Tool Type: Prewinder Type II.
HELI-COIL Mandrel: Pneumantic Tool Threaded Mandrel, Helical Inserts, Steel (MPN 8553-2). Key specifications — Compatible Insert Type: Helical Inserts; Compatible Thread Type: Coarse; Brand: HELI-COIL; Tool Type: Pneumantic Tool Threaded Mandrel.
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HELI-COIL Mandrel: Pneumantic Tool Threaded Mandrel, Helical Inserts, Steel (MPN 8553-2). Key specifications — Compatible Insert Type: Helical Inserts; Compatible Thread Type: Coarse; Brand: HELI-COIL; Tool Type: Pneumantic Tool Threaded Mandrel.
HELI-COIL Mandrel: Pneumantic Tool Threaded Mandrel, Helical Inserts, Steel (MPN 8553-06). Key specifications — Compatible Insert Type: Helical Inserts; Compatible Thread Type: Coarse; Brand: HELI-COIL; Tool Type: Pneumantic Tool Threaded Mandrel.
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HELI-COIL Mandrel: Pneumantic Tool Threaded Mandrel, Helical Inserts, Steel (MPN 8553-06). Key specifications — Compatible Insert Type: Helical Inserts; Compatible Thread Type: Coarse; Brand: HELI-COIL; Tool Type: Pneumantic Tool Threaded Mandrel.
HELI-COIL Thread Gauge: Thread Gauge, Helical Inserts, M2.5-0.45 Compatible External Thread Size (MPN 1324-2.5). Key specifications — Compatible Insert Type: Helical Inserts; Compatible Thread Direction: Right Hand; Compatible Thread Type: Coarse; System of Measurement: Metric; Brand: HELI-COIL; Tool Type: Thread Gauge.
HELI-COIL
HELI-COIL Thread Gauge: Thread Gauge, Helical Inserts, M2.5-0.45 Compatible External Thread Size (MPN 1324-2.5). Key specifications — Compatible Insert Type: Helical Inserts; Compatible Thread Direction: Right Hand; Compatible Thread Type: Coarse; System of Measurement: Metric; Brand: HELI-COIL; Tool Type: Thread Gauge.
HELI-COIL Mandrel: Pneumantic Tool Threaded Mandrel, Helical Inserts, Steel (MPN 8759-12). Key specifications — Compatible Insert Type: Helical Inserts; Compatible Thread Type: Coarse; Brand: HELI-COIL; Tool Type: Pneumantic Tool Threaded Mandrel.
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HELI-COIL Mandrel: Pneumantic Tool Threaded Mandrel, Helical Inserts, Steel (MPN 8759-12). Key specifications — Compatible Insert Type: Helical Inserts; Compatible Thread Type: Coarse; Brand: HELI-COIL; Tool Type: Pneumantic Tool Threaded Mandrel.
HELI-COIL Mandrel: Pneumantic Tool Threaded Mandrel, Helical Inserts, Steel (MPN 8051-4). Key specifications — Compatible Insert Type: Helical Inserts; Compatible Thread Type: Coarse; Brand: HELI-COIL; Tool Type: Pneumantic Tool Threaded Mandrel.
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HELI-COIL Mandrel: Pneumantic Tool Threaded Mandrel, Helical Inserts, Steel (MPN 8051-4). Key specifications — Compatible Insert Type: Helical Inserts; Compatible Thread Type: Coarse; Brand: HELI-COIL; Tool Type: Pneumantic Tool Threaded Mandrel.
HELI-COIL Threaded Mandrel Tool: Threaded Mandrel Type AM, Helical Inserts, Steel (MPN 3747-20). Key specifications — Compatible Insert Type: Helical Inserts; Compatible Thread Direction: Right Hand; Compatible Thread Type: Coarse; System of Measurement: Metric; Brand: HELI-COIL; Tool Type: Threaded Mandrel Type AM.
HELI-COIL
HELI-COIL Threaded Mandrel Tool: Threaded Mandrel Type AM, Helical Inserts, Steel (MPN 3747-20). Key specifications — Compatible Insert Type: Helical Inserts; Compatible Thread Direction: Right Hand; Compatible Thread Type: Coarse; System of Measurement: Metric; Brand: HELI-COIL; Tool Type: Threaded Mandrel Type AM.
HELI-COIL Threaded Mandrel Tool: Threaded Mandrel Type III, Helical Inserts, Steel (MPN 3724-18). Key specifications — Compatible Insert Type: Helical Inserts; Compatible Thread Direction: Right Hand; Compatible Thread Type: Coarse; System of Measurement: Inch; Brand: HELI-COIL; Tool Type: Threaded Mandrel Type III.
HELI-COIL
HELI-COIL Threaded Mandrel Tool: Threaded Mandrel Type III, Helical Inserts, Steel (MPN 3724-18). Key specifications — Compatible Insert Type: Helical Inserts; Compatible Thread Direction: Right Hand; Compatible Thread Type: Coarse; System of Measurement: Inch; Brand: HELI-COIL; Tool Type: Threaded Mandrel Type III.