Abstract: An electrical contact, or terminal, structure is disclosed, which is designed for use in an electrical connector device. The terminal structure is a generally flat conducting element, preferably a unitary metal stamping, having a contact end which is resiliently deflectible by a force normal to the plane of the element, and having spaced-apart, longitudinally extending side portions, or branches, which are resiliently deflectible toward one another in the plane of the element to permit their insertion into and automatic locking in place in a terminal supporting member, such as a molded insulating insert, or block, mounted in either the male or female shell of an electrical connector device.