A connector includes a connector main body 1 having a metallic electrical connecting portion 2, an inner molded portion 10a provided outside the connector main body and having a pair of protrusions 12 which are integrally formed on the opposite surfaces of the inner molded portion 10a, and an outer molded portion 20a provided outside the inner molded portion so that the protrusions 12 are partially exposed on the outer surface of the outer molded portion 20a. The pair of protrusions 12 protrude toward a pair of metal molds for molding the outer molding portion, respectively.