400Pcs Threaded Inserts, M2 M2.5 M3 M4 M5 M6 Female Thread Metric Knurled Nuts Assortment Kit, Brass Heat Set Insert for Plastic and 3D Printing Components

Description

🔩 Upgrade your 3D prints with brass precision and heat-proof durability!

The Ktehloy 400Pcs Threaded Inserts kit features high-quality brass inserts in six metric sizes (M2 to M6), engineered with 45° knurling for superior torque resistance and thermal endurance beyond 300°C. Designed for seamless heat-set or ultrasonic installation into all common thermoplastics, this assortment is perfect for 3D printing, injection molding, and electronics assembly. Packaged in a sturdy, compartmentalized box, it ensures quick access and organized storage for professional-grade fastening solutions.