Locating column, also known as spring plunger, ejector pin, spring locating column. It is a positioning part composed of a body, a spring, and a pin. With the help of the pressure of the spring pushing the pin, the equipment or product can run smoothly. The body is made of steel and stainless steel. Some products are anti-fall and anti-loose. The pin is made of metal and plastic. It is usually locked with a special wrench. It is widely used in machinery, molds, equipment, home appliances, furniture, etc.