The 380635-1 is a reusable test socket designed for component testing with an open-end configuration. It features a receptacle spring member that maintains uniform pressure to ensure true readings and maximum conductivity while holding component leads securely in place. The socket accepts lead sizes of 0.018–0.040 inches (0.46–1.02 mm) and incorporates a flared lip that acts as a stop and creates a bellmouth entry for easy insertion of component leads. The drawn copper cup is inserted into a 0.089 inch (2.26 mm) mounting hole, with overall dimensions of 0.254 inches (6.45 mm) maximum height and 0.088 inches (2.24 mm) width. This socket is ideal for temporary component testing and evaluation in laboratory and manufacturing environments where reusability and reliable electrical contact are essential.