100 Pcs M3 Knurled Brass Threaded Insert Nut For Plastic 3D Printing With Blind Hole OD 5.3mm And Height 3 To 20mm Durable Wear Resistant Fastener Interchangeable For Manufacturing And DIY Projects

M3 Knurled Brass Threaded Inserts for Plastic ✔️ Pack of 100 M3 knurled brass inserts for durable plastic fixes

These knurled brass inserts are designed to reinforce threaded holes in plastic parts. They work with 3D printed parts, injection-molded plastics, and other manufacturing or DIY projects needing strong, reusable threads. Color: One Color; installation can be done by ultrasonic or heat into the plastic matrix, or formed during injection molding.

✅ 100 pcs per pack
✅ M3 outer diameter 5.3 mm
✅ Height range 3 to 20 mm
✅ Wear-resistant brass for long life
✅ Compatible with ultrasonic or heat insertion methods

💡 What is a M3 brass threaded insert used for in plastic parts?

A handy solution for adding durable, reusable threads to plastic assemblies. It helps prevent wear and strip-outs when screws are repeatedly assembled and disassembled.

- Thread reinforcement in plastic parts
- Reusable M3 brass inserts for screw threads
- Compatible with ultrasonic or heat insertion
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