Screw Terminal Header

A screw terminal header is a typical component of an electrical connection on circuit boards. It is essentially a group of precisely positioned metal terminals, each of which has a small screw that can be tightened with a screwdriver. Its main objective is to securely and conveniently connect external wires to the board. Its primary purpose is to connect external wires to the board in a convenient and safe manner. Its core function is to safely and conveniently connect external wires to the board. Unlike simple pins, the most important feature of screw terminals is that the bare metal portion of the inserted wire is crimped by tightening the screw to form a strong electrical connection. This mechanical crimping is the basis of its reliability.

Using screw terminals is very intuitive and convenient. To connect the wires, simply strip off the appropriate amount of wire insulation at the end of the wire, insert it into the terminal hole, and then fasten the appropriate screws with a screwdriver. The screw moves downwards and presses the wire firmly against the metal contact plate of the terminal. This design offers a significant advantage: the extremely robust and reliable connection is particularly suitable for use in vibration situations or for the connection of thicker wires, such as power lines or motor cables. In addition, installation and maintenance are made easier by the fact that there is no need to solder the wires themselves, allowing the user to easily replace or adjust the connected wiring.

 

Electrical mounting	Screw terminal
Contact material	Copper
Contact plating	Tinned
Thread	M4
Spatial orientation	Straight

      

 

1.Robust and reliable

Individual screws in each terminal forcefully crimp the metal portion of the wire to the conductive sheet, creating a strong clamping force that prevents loosening due to vibration or external forces, providing a solid safeguard for industrial applications.

2.Easy to operate

There is no need for soldering, just use a screwdriver to loosen, insert and tighten the wires to complete the connection or disassembly, which is ideal for commissioning and maintenance work that requires frequent adjustments to the wiring.

3.High current carrying capacity

Its metal conductive sheet is usually made of high-quality copper, with a large contact area, coupled with strongly crimped screws to form a low-resistance connection point, effectively reducing the contact resistance and heat generation.

4.Clear layout

Multiple terminals are neatly arranged in a standardized spacing, with a compact overall structure, and are soldered directly to the edge of the circuit board.

Screw terminal header is an electrical component that connects wires by mechanical screw crimping. At its core, each individual terminal is equipped with a fastening screw, which physically crimps the exposed metal part of the wire to the internal high-quality copper conductive sheet. The strong clamping force generated by this design is the basis for an extremely strong and reliable electrical connection that is resistant to the effects of vibration, pulling or temperature changes, providing stability for critical applications such as industrial equipment and power transmission.

Using the screw terminal header is extremely easy and intuitive. Instead of soldering, the user simply loosens the screws with a screwdriver, inserts the stripped wires, and tightens the screws to complete the connection or removal. This no-soldering feature greatly improves wiring efficiency and flexibility, making installation, testing, replacement or later line adjustment very fast, especially suitable for R & D debugging and maintenance scenarios that require frequent changes. At the same time, the low resistance connection point formed by the strong crimping of the screws, combined with the large contact area of the copper conductive sheet, so that it is able to safely carry relatively high currents, far better than ordinary pins, very suitable for power lines, motors and other high-current applications.

Hot Tags: screw terminal header, China screw terminal header manufacturers, suppliers, factory