
Product Details
Let's be honest, threading a steel screw directly into your 3D printed FPV mounts is a rookie mistake that ends in tears and broken gear. You need brass heat set inserts. Whether you are extruding PLA, PETG, or squishy TPU, melting a metal thread into thermoplastic is the only way to ensure your flight controller doesn't eject itself mid-flight. After 10 years of manufacturing and delivering commercial FPV systems in the UK, we've seen enough stripped plastic to last a lifetime. These heat set threaded inserts for 3D printing are engineered to be pressed in with a standard soldering iron tip. Forget the fragile, self-tapping alternatives; these melt-in threaded inserts give you the massive pull-out strength required for a secure, crash-resistant build. Grab your iron, try not to burn your fingers, and upgrade your DIY electronics enclosures with reliable heat press brass inserts.

Key Highlights
- Knurled Grip: Deep diagonal knurling ensures maximum torque resistance and locks into the plastic once it cools.
- Precision Threading: Clean M2 machine threads, because dealing with cross-threaded micro-fasteners is a unique form of torture.
- Effortless Install: Just heat, press, and wait. Try not to push it all the way through your 2mm wall thickness.
Why You Want Heat Set Threaded Inserts for 3D Printing
Because wood screws driven into plastic look terrible and fail instantly. If you are building custom drone canopies, sensor mounts, or tiny whoop frames, you need a fastener that actually survives an impact. These M2 inserts sink perfectly into your thermoplastic parts, giving you a professional-grade, reusable machine thread that allows you to rebuild your rig without destroying the mounting points.
Specifications & Available Sizes

| Configuration SKU | Thread | Height (H) | Outer Diameter (D) |
|---|---|---|---|
| KN-M2-H3-D35 | M2 | 3mm | 3.5mm |
| KN-M2-H4-D35 | M2 | 4mm | 3.5mm |
| KN-M2-H5-D35 | M2 | 5mm | 3.5mm |
| KN-M2-H3-D4 | M2 | 3mm | 4mm |
| KN-M2-H4-D4 | M2 | 4mm | 4mm |
| KN-M2-H5-D4 | M2 | 5mm | 4mm |
FAQ
How do I install these melt-in threaded inserts into my 3D prints?
Set your soldering iron to the melting temperature of your specific filament (e.g., around 200°C for PLA). Place the brass insert over the pre-modeled hole, gently press down with the iron tip until the plastic softens, and push it flush. Let it cool completely before inserting a screw, or you'll rip the whole thing out.
What’s in the Box*
- 10× M2 Brass Heat Set Inserts (in your selected size configuration)
Disclaimer
We are not responsible for burned fingers, melted enclosures, toxic fumes, or the magic smoke that escapes when your poorly secured electronics inevitably short out.
Still Here?
Stop reading and start melting. Your 3D printer has been sitting idle for a week, and it's starting to look like a very expensive paperweight.