Applications of Blind Hole Knurled Copper Nuts

Its main uses and features are as follows:
Enhancing the thread strength of plastic parts: By embedding blind hole knurled copper nuts into plastic parts (such as mobile phone cases, laptop cases, electrical appliance housings, automobile components, etc.), a metal internal thread can be formed in the plastic, significantly increasing the strength and durability of the connection, and preventing stripping or damage due to repeated screwing and unscrewing.

Optimizing injection molding process and bonding strength: The blind hole design (Type B) effectively isolates the pressure of molten plastic during injection molding, preventing material from entering the threaded hole and ensuring the cleanliness and usability of the threads. The knurled outer surface (such as straight patterns, cross patterns, or figure-eight embossing) mechanically interlocks with the plastic, greatly enhancing torque and pull-out resistance, preventing the nut from loosening or falling out of the plastic.

Improving installation efficiency and reliability: These nuts are often quickly embedded into plastic parts using heat or ultrasonic methods. Their round-head guiding design allows precise positioning, and the stepped outer diameter is gradually pressed into the plastic, reducing the risk of cracking the plastic substrate and improving production yield.

Meeting high thermal conductivity requirements: Copper material has excellent thermal conductivity, which allows it to quickly transfer heat to the surrounding plastic during injection molding, softening it for easier forming. After cooling, it bonds tightly with the plastic, forming a stable structure.

These nuts are widely used in plastic housings and structural components of electronic devices, communication equipment, household appliances, toys, automotive interiors, and medical devices. They are key components for achieving a "plastic housing + metal thread" combination. Specifications generally range from M2 to M16 and comply with national standards such as GB/T 809. Some products also have surface treatments like tin plating or nickel plating to enhance corrosion resistance. ...