Spring contact test probe-test probe-test pin-pogo pin:these all items are to describe a component whose spring loaded tip will provide a electrical contact to a product. The traditional use for them is to make contact with printed circuit boards (PCBs) or electrical components, to test functionality and to measure the value of the components. The spring contact pins are widely used in test fixtures associated with automatic test equipment (ATE). They are also used inside a functional test station as part of a larger production line.