Definition: PCB screw holes are a special hole structure used to fix and connect electronic components. It is done by burying a metal sleeve of a certain depth and diameter at the bottom of the hole when drilling on the PCB, so that the electronic components can be fixed with screws or nuts.

Classification: According to different manufacturing requirements and design purposes, PCB screw holes can be divided into counterbore holes and countersink holes. The following pictures can intuitively see the difference between the two types of holes.

Application: Counterbore/countersink holes provide stable and reliable installation and connection of electronic components, ensuring that the components are fixed on the PCB board and are not easy to loosen or fall off. The use of counterbore/countersink holes are indispensable in fields with high requirements for reliability and seismic resistance, such as aerospace, automotive electronics, etc.

So how are counterbore/countersink holes made? The products of counterbore/countersink holes are only different in mechanical forming, and the other processes are the same as ordinary products. When producing counterbore/countersink holes, the appropriate milling cutter is generally selected according to design requirements such as depth and angle. PCB counterbore/countersink holes play an important role in the design and manufacture of electronic products, providing a solid support for the installation and connection of electronic components.

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