Copper nut column (also known as copper stud, threaded copper column) is a metal connector with internal and external threads, usually used in electronic equipment, mechanical structures or plastic parts, to fix, support or conduct electricity. The following are the usage and precautions of copper nut column:
1. Common types of copper nut column
Through hole type: There are threads inside and outside, running through the entire column.
Blind hole type: There is only one end with internal threads, and the other end is closed.
Press-in type: Embedded into plastic or metal substrate by pressure.
Welding type: Fixed to the substrate by welding (such as soldering, laser welding).
2. Installation tools and materials
Tools: electric soldering iron (for welding), hot press, crimping pliers, screwdriver, wrench, positioning fixture, etc.
Auxiliary materials: thermal conductive silicone grease (for heat dissipation), thread glue (to prevent loosening), cleaner (to remove oxide layer), etc.
3. Installation steps
1. Press-in method (applicable to plastic parts)
Steps:
Pre-process a hole on the plastic part that matches the outer diameter of the copper nut column (the hole diameter is slightly smaller than the outer diameter of the nut column to ensure interference fit).
Heat the copper nut column or plastic hole (hot pressing method), and press the nut column into the hole with a crimping tool.
After cooling, the plastic shrinks and fixes the nut column.
Notes:
Control the temperature to avoid deformation of the plastic part.
Press in evenly to prevent tilting.
2. Soldering method (applicable to metal substrates)
Steps:
Clean the surface of the substrate and copper nut column and remove the oxide layer.
Use an electric soldering iron or reflow soldering to fix the nut column on the metal substrate with solder.
After cooling, check whether the solder joint is firm.
Notes:
Copper conducts heat quickly, so a high-power soldering iron is required.
Avoid solder clogging the thread.
3. Threaded screw-in method (embedded installation)
Steps:
Pre-process threaded holes on the substrate (matching the external threads of the copper nut column).
Apply a small amount of thread glue and screw the copper nut column into the substrate.
After curing, a stable connection is formed.
Notes:
Use a moderate amount of thread glue to avoid penetration into the internal threads.
Keep it vertical when screwing in to prevent damage to the threads.
IV. Precautions for use
Anti-loosening:
In a vibrating environment, use thread glue (such as Loctite) or add spring washers.
Conductive requirements:
If used for conductivity, ensure that the contact surface between the nut column and the substrate is clean, and apply conductive paste if necessary.
Corrosion resistance:
In a humid or corrosive environment, nickel-plated or tin-plated copper nut columns are preferred.
Heat dissipation design:
If used for heat dissipation, apply thermal grease on the contact surface and ensure a tight fit.
Avoid overload:
Copper is soft, and the force needs to be controlled when bearing torque to prevent thread slippage.
