The present invention relates to a contact and an electrical connector having such contacts. The contact is formed as a single piece of elastic metal sheet and comprises a base frame and a spring arm restrained by the base frame in a preload state. The base frame comprises two side walls each having a stopper projection formed in a plane within which a corresponding side wall is disposed. The spring arm is formed with opposite projections which are pressed down and constrained in position by the stopper projections respectively. The contact can be manufactured in a simple way and presents a high reliability.