The TE Connectivity / P&B Brand part 20C318 is a high-quality hold down spring designed for use with KU Series relays and 27E893 DIN rail screw terminal sockets. This sturdy spring ensures secure and reliable fastening of the relay onto the socket, preventing any unwanted movement or disconnection. Its durable construction and ease of installation make it an essential component in industrial, commercial, and residential applications where dependable relay performance is crucial. Trust TE Connectivity / P&B Brand's 20C318 hold down spring for superior functionality and peace of mind in your electrical systems.