Connector

A socket body is reinforced by inserted or press-fitted reinforcing members inserted so that a protruding table is eliminated and a width dimension thereof is reduced. Each socket contact has a first contact portion formed in substantially U-shape for elastically deformable. A header body has concave portions on upper face of the socket body (SIC). Each header post has a second contact portion disposed along a side wall of the header body and to be contacted with a first contact portion of the socket contact, and a curved portion formed in substantially reverse U-shape toward the concave portion from a vicinity of an upper end portion of the side wall of the header body. A curvature radius of the curved portion of the header post is established to be the smallest in a scope that a free end of the first contact portion of the socket contact contacts in the second contact portion side from a peak of the curved portion, and the socket contact is rarely buckled due to scratching with the curved portion.