100Pcs M3 Brass Heat Set Threaded Insert Nuts for 3D Printing

100Pcs M3 Knurled Brass Heat Set Threaded Insert Nuts for 3D Printing

Upgrade your 3D printed parts with professional-grade, durable threaded connections. These M3 knurled brass heat set insert nuts are engineered for makers, engineers, and hobbyists who demand strong, long-lasting threads in plastic components. Simply apply heat and press into your printed or injection-moulded parts for a secure, no-slip fit — no back-drilling or countersinking required.

Key Features

• High-Quality Brass Construction: Made from premium brass for exceptional hardness, corrosion resistance, and reliable long-term durability.
• No Counterbore Needed: The built-in guide pilot means you can install directly into a standard boss hole — saving time and effort on every build.
• Knurled Exterior: The knurled outer surface locks firmly into the surrounding material, preventing rotation or pull-out under load.
• Versatile Installation: Compatible with ultrasonic insertion, heat-press installation, or direct moulding-in during injection moulding processes.
• Consistent M3 Threading: Precision M3 internal threads ensure reliable, repeatable fastening with standard M3 screws every time.
• Bulk Pack of 100: Ideal for prototyping, production runs, or keeping your workshop well-stocked.

Specifications

• Thread Size: M3
• Material: Brass
• Colour: Gold
• Dimensions: 0.57 × 0.46 × 0.46 cm (per nut)
• Quantity: 100 pcs per pack
• Country of Origin: Made in China

What's in the Box?

• 100 × M3 Knurled Brass Heat Set Threaded Insert Nuts

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Frequently Asked Questions

Q: How do I install M3 brass heat set insert nuts into 3D printed parts?

A: Installation is straightforward. Heat a soldering iron or dedicated heat-set tool to around 200–230 °C, place the insert on the boss hole, and apply gentle downward pressure until the nut sits flush with the surface. The heat softens the surrounding plastic, allowing the knurled body to embed securely. Once cooled, the nut is locked firmly in place and ready for M3 screws.

Q: What types of plastic are these heat set inserts compatible with?

A: These M3 brass inserts are compatible with most common 3D printing filaments and moulded plastics, including PLA, PETG, ABS, ASA, and Nylon. They work particularly well wherever a strong, reusable threaded connection is needed in a plastic part.

Q: Can these inserts be used in injection moulded parts as well as 3D printed parts?

A: Yes. These embedment nuts are designed for use with both 3D printed parts and injection moulded components. They can be installed via heat press, ultrasonic insertion, or moulded directly in during the injection process, making them highly versatile for a wide range of manufacturing applications.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.