These terminal pins are designed as cutting clamp contacts and have sharp edges that cut into the cable or wire, thereby establishing a secure connection. Terminal pins, in general, are electrical connection components used in various electronic applications. They are typically used in PCB assembly to create a secure and permanent connection between electronic components. Overall, terminal pins are characterized by their solderability, size and shape, temperature resistance, corrosion resistance, and material quality. A good combination of these properties ensures a reliable and lasting connection in the electronics industry. The recommendation for the size of PCB drill holes is a guideline that should always be considered in conjunction with the nature and structure of the PCB, as well as the processing of the solder pins, and adjusted if necessary to achieve an optimal and secure connection.