Key Features
- Corrosion-resistant stainless steel construction ideal for marine environments
- Restores damaged or stripped threads in engine blocks, gearboxes, and hull fittings
- Simple installation with standard drilling and tapping tools
- Provides strong, durable threads in aluminum and other soft metals
- Withstands high vibration and high-stress conditions
- Available in a wide range of metric and imperial thread sizes
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Heli-Serts Thread Repair Inserts |
| IMPA Code | 693801 |
| Category | Screws & Nuts |
| Material | Corrosion-resistant stainless steel |
| Common Thread Sizes | Metric M4–M20; Imperial #10–1" (other sizes available) |
| Finish | Plain / Passivated for saltwater resistance |
| Applications | Engine blocks, pumps, manifolds, and shipboard hardware |
| Packaging | Individual inserts, kits, and bulk quantities |
Frequently Asked Questions
What are Heli-Serts?
Heli-Serts are helical coil thread repair inserts used to rebuild damaged or stripped internal threads. They are inserted into a pre-tapped oversized hole to provide a strong, durable thread that matches the original fastener size.
How do I install Heli-Serts?
The installation process involves three steps: drill out the damaged threads, tap a new oversized thread with a special tap, and then insert the Heli-Sert using a dedicated installation tool. The insert is then broken off at the tang and the repaired thread is ready for use.
Are these suitable for saltwater environments?
Yes, these Heli-Serts are manufactured from corrosion-resistant stainless steel, making them ideal for continuous exposure to seawater and high-humidity marine environments.
Does the product include a drill or installation tools?
The Heli-Serts themselves are inserts only; installation tools such as drills, taps, and insert drivers are not included by default. They are available separately or as part of a complete repair kit.
Inquire About This Product
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