A connector provided with a female-type metal terminal fitting, includes a case portion including a bottom plate portion, first and second side plate portions, and an upper plate portion, a lance engaging portion formed at a rear end portion of the upper plate portion so as to engage with a lance, a biasing portion integrated in the case portion, a wire connecting portion provided so as to be extended to a rear side of the case portion, and a spring supporting plate portion laminated on an inner face of the upper plate portion. A rear end portion of the spring supporting plate portion is recessed toward inside of the case portion further than the rear end portion of the upper plate portion. The biasing portion is extended from the spring supporting plate portion.