200Pcs Heat-Set Threaded Inserts, M3 Heat Set Insert for 3D Printing Components and Plastic Parts - Brass Metric Knurled Nuts

These 200-piece M3 heat-set threaded inserts are crafted from high-quality brass, featuring a knurled metric design for exceptional grip and stability. Engineered specifically for 3D printing components and plastic parts, they create strong, durable internal threads that resist stripping and wear, making them ideal for reinforcing 3D printed assemblies, hobby projects, and custom plastic fixtures.

Designed for heat-set installation, these inserts melt smoothly into plastic or 3D printed surfaces when heated with a soldering iron or dedicated insert tool, forming a tight, permanent bond without extra adhesives. Compatible with most FDM 3D printing materials like PLA, ABS, and PETG, they suit a wide range of applications from DIY crafts and prototyping to industrial plastic part modifications.

Each insert boasts precise metric threading (M3) for consistent compatibility with standard M3 screws, ensuring a secure fit every time. The knurled exterior enhances torque resistance, preventing loosening even under repeated use. With 200 pieces per pack, this set offers excellent value for makers, engineers, and hobbyists looking to upgrade the strength and longevity of their 3D printed and plastic projects.