a connector to be detachably fitted with a flexible printed circuit board or a flexible flat cable includes a required number of contacts , a housing for holding and fixing therein the contacts , and a slider for pressing the circuit board or flat cable against the contacts . the housing is provided with anchoring portions at locations corresponding to connection portions of the contacts . connection portions of the contacts are each formed with an oblique recess to engage the anchoring portion of the housing . when the contact is being inserted into an insertion groove of the housing , a contact portion of the contact comes into contact with an upper wall of the insertion groove , but on proceeding of the insertion , the contact portion of the contact will return into parallel with the insertion groove with the aid of guidance of the engagement of the oblique recess with the anchoring portion of the housing without any oblique positioning of contacts , thereby achieving stable electrical connection of the connector .