Brass Heat Set Threaded Inserts Kit M3 M4 M5 Knurled Female Threads For Plastic And 3D Printing Components, 300 Pcs Assortment, Easy Ultrasonic Or Heat Install, Durable, Corrosion Resistant

Brass Knurled Threaded Inserts Kit for Plastic/3D Printing
✔️ 300-Piece M3/M4/M5 knurled brass inserts for heat or ultrasonic

These knurled brass threaded inserts embed into plastics and 3D-printed parts to provide durable metal threads. The 300-piece assortment covers M3, M4, and M5 sizes and is ideal for hobbyists, makers, and small production runs needing secure, heat-tolerant inserts.

✅ Material: Brass with corrosion resistance
✅ Height options: 3mm (0.118 in), 4mm (0.157 in), 5mm (0.197 in)
✅ Inner diameter: 3mm (0.118 in), 4mm (0.157 in), 5mm (0.197 in)
✅ Outer diameter: 5mm (0.197 in), 6mm (0.237 in), 7mm (0.276 in)
✅ Package: 300 pieces total, M3/M4/M5
✅ Installation: ultrasonic or heat insert with guide pilot

💡 What is a brass knurled threaded insert used for in 3D printing and plastic assemblies? This handy part creates durable metal threads in soft plastics and molded parts. - Provides robust metal threads for screws in plastic housings - Works with ultrasonic or heat insertion for secure mounting - Available in M3, M4, and M5 sizes for common fasteners