In a contact housing having a contact chamber for accommodating a contact body which can be inserted into the contact chamber through an assembly opening in a direction of insertion, in an operational position of the contact body in which it is stopped within the contact chamber, at least one element of contact chamber is lying against a stopping surface (support surface), of contact body, which generally points in a direction opposite to the insertion direction in such a way that the removal of the contact body is generally prevented counter to the insertion direction, the present invention provides that a center axis of the assembly opening has a lateral offset transversely to the direction of insertion with respect to a center axis of the stopped contact body; that in the contact chamber, in the direction of insertion, behind the assembly opening, a displaceably situated, elastically flexible spring is provided that extends into the path of the contact body, which narrows the path for the contact body and can be deflected by the contact body, and which is designed to be stressed in an assembly position during the insertion of the contact body.