Brass Heat Set Inserts – Knurled Threaded Inserts for Plastic (M2–M8)
£0.75 – £9.95Price range: £0.75 through £9.95
- Durable brass construction
- Knurled exterior for better grip
- Heat set installation
- Compatible with standard metric screws
- Suitable for 3D printing, injection moulding, and mechanical assemblies
- Available in M2, M2.5, M3, M4, M5, M6 and M8 sizes
- Ideal for reinforcing plastics (PLA, ABS, PETG, Nylon, …)
Description
High-Quality Brass Heat Set Inserts – Durable, Reliable, and Versatile
Enhance the strength and longevity of your 3D printed parts, injection-molded components, and other soft materials with our premium Brass Heat Set Inserts. Engineered for superior performance, these inserts provide a robust, metal-threaded connection that withstands high temperatures, mechanical stress, and repeated use. Available in sizes ranging from M3 to M6, this 50-piece set is perfect for a wide range of applications including 3D printing, prototyping, mechanical assembly, and more.

Key Features
Heat Set Installation
- Effortless Integration: Designed for use with a soldering iron or heat press, these inserts are easily embedded into plastic parts. When heated, the surrounding material softens, allowing the knurled surface of the insert to grip securely.
- Secure Fit: The heat set process ensures a strong bond between the insert and the base material, minimizing the risk of thread stripping or loosening over time.
Knurled Body Design
- Enhanced Grip: The knurled exterior increases friction between the insert and the host material, ensuring maximum retention and resistance to rotational and pull-out forces.
- Optimal Performance: Provides a more reliable and durable threaded connection, essential for applications where mechanical stability is critical.
Durable Brass Construction
- Long-Lasting Durability: Crafted from high-quality brass, these inserts offer exceptional corrosion resistance and heat resistance, ensuring your components maintain their integrity even in challenging environments.
- Cost-Effective: Brass is not only durable but also economical, making these inserts a smart investment for both hobbyists and professionals.
Precision Threading
- Smooth and Consistent Threads: Each insert is precisely machined to provide a consistent thread, ensuring compatibility with standard metric screws and bolts.
- Reliable Performance: Engineered for optimal load distribution and strength, these inserts deliver dependable performance in every application.
Applications of Brass Heat Set Inserts
3D Printing
- Reinforced Threading: Ideal for reinforcing threaded holes in 3D printed parts made from PLA, ABS, PETG, Nylon, and other plastics.
- Versatile Use: Perfect for projects requiring assembly, disassembly, or frequent adjustments, ensuring your prints are both functional and durable.

Injection Moulding
- Enhanced Structural Integrity: Easily embedded during or after the moulding process to provide robust, metal-threaded connections.
- Mass Production: Suitable for injection-molded parts where reliable and strong connections are essential.
Prototyping and Product Development
- Rapid Iteration: Enables the creation of prototypes with metal-reinforced threaded holes, facilitating testing and assembly without damaging the printed or molded material.
- Flexible Design: Adaptable to various project needs, from small-scale prototypes to larger production components.
Mechanical Assembly
- Wide Range of Uses: Ideal for robotics, enclosures, fixtures, and other mechanical applications where secure and durable threaded connections are crucial.
- Reliable Under Stress: Designed to withstand vibration, mechanical stress, and repeated assembly cycles.
Material and Thread Compatibility
- Material Compatibility: These brass inserts are compatible with a wide range of plastics (PLA, ABS, PETG, Nylon) and can even be used with soft metals and wood if necessary.
- Thread Sizes: Available in M3, M4, M5, and M6 sizes, making them versatile for various fastening needs in both 3D printing and traditional manufacturing.
Installation Process of Brass Heat Set Inserts
- Prepare the Base Material:
- Ensure that the hole in your part matches the recommended size for a snug fit. This hole is typically designed into the 3D print or injection mold.
- Heat the Insert:
- Use a soldering iron or heat press to gently heat the brass insert. Avoid overheating the surrounding material.
- Insert and Secure:
- Press the heated insert into the prepared hole until it sits flush with the surface.
- Allow to Cool:
- Let the part cool completely so the plastic solidifies around the insert, creating a secure, permanent bond.
Why Choose Our Brass Heat Set Inserts?
- Unmatched Durability: Brass construction ensures high resistance to wear, corrosion, and heat, making these inserts ideal for demanding applications.
- Versatility: With multiple thread sizes available, these inserts meet the needs of various projects, from intricate 3D prints to robust injection-molded parts.
- Strong and Reliable Connections: The combination of a heat set installation process and a knurled design ensures secure, long-lasting threaded connections that maintain integrity under stress.
- Cost-Effective: Our inserts offer exceptional quality and performance at an affordable price, making them a valuable addition to any workshop or manufacturing toolkit.
Enhance your 3D printing and manufacturing projects with our brass threaded heat set inserts—designed to deliver durability, reliability, and versatility in every application. Order now and experience the difference in quality and performance!
Need help choosing the right size of our brass heat set inserts,? Contact us for expert support.
Additional information
| Thread size | M2, M2.5, M3, M4, M5, M6, M8 |
|---|---|
| Pack Size | 20PCS, 50PCS |
Fast & Reliable Dispatch
We process all orders within 24 hours to ensure quick and efficient dispatch. Standard delivery typically takes 2–4 working days, with express options available for faster service when needed.
Delivery & Support
Free delivery is available on orders over £40. All items are securely packaged and include tracking information once shipped. If you have any questions regarding your delivery, please contact us for assistance.


Reviews
There are no reviews yet.