220pcs Brass Heat Set Insert Nuts Kit for 3D Printing – M2 M2.5 M3 M4 M5 M6 Knurled Threaded Inserts

Why You Need This Product?: Say goodbye to stripped plastic threads—these heat-set inserts dramatically improve strength, durability, and reusability of your 3D printed assemblies.

Strong Brass Construction: Made from high-quality brass with knurled outer surfaces for superior grip inside plastic, ensuring firm threads that won’t loosen or pull out.

Complete 220-Piece Assortment: Includes M2, M2.5, M3, M4, M5, and M6 heat-set threaded inserts in multiple lengths—perfect for hobbyists, professionals, and frequent 3D printing projects.

Designed for 3D Printed Parts: Ideal for PLA, ABS, PETG, resin, nylon, and other plastics—creates durable metal threads in soft materials for repeated screw use.

Easy Heat Installation: Works seamlessly with soldering iron tips or heat insert tools. Inserts melt smoothly into plastic without cracking or deforming printed parts.

Wide DIY & Professional Use: Perfect for 3D printers, robotics, electronics enclosures, RC models, custom tools, prototypes, and mechanical repairs.