100 Pcs M3 X 4mm Knurl Thread Insert Nuts Brass Tone For Injection Molding Ultrasonic Heat Set Install Round Metal Threaded Inserts For Beefy Heavy Duty Joints In Plastic
✔️ 100 pcs, M3 x 4mm, brass tone, heat-set compatible inserts
These knurl thread insert nuts are designed for injection molding applications, providing durable metal threads in plastic parts. They can be installed by ultrasonic welding or heat-set into threaded holes for strong, reusable joints.
✅ Pack size: 100 pieces
✅ Material: brass tone, heat resistant
✅ Thread size: M3 x 4mm
✅ Knurl style for secure grip in plastic
✅ Installation: ultrasonic or heat-set into tapered holes
💡 What is a threaded insert used for in plastic assemblies?
A handy intro sentence: Threaded inserts add durable metal threads to soft plastics, enabling strong, repeatable joints.
- useful in furniture and consumer goods applications
- ideal for rapid prototyping and repair of plastic parts
- supports M3 threaded hardware in injection-molded joints