The invention discloses a method of manufacturing a jack comprising a step of punching a sheet metal by which a plurality of contact piece elements to be individual contact pieces of a jack are formed into a state of being partially connected to one another and arranged in parallel, a step of bending both ends of each contact piece element downward, a step of cutting off each contact piece element arranged in parallel by a cutter to form individual contact pieces, and a step of forcedly incorporating each contact piece into a jack body positioned right under a punching stroke of the cutter used in the cutting step whereby a complete automatization of the manufacturing is attained, considerably increasing productivity and decreasing an equipment cost as much.

A flat strip of conductive material is formed by extrusion with an integrally formed thickened or flanged portion along at least one longitudinal edge of the extrusion. Individual contact/connector terminals are then stamped from the extrusions with the flat portions forming the blade of the connector terminal and the thickened flanged portion forming a head on the blade which provides the integrally formed contact surface.

A method for providing a receptacle includes the steps of: providing a stamped blank having a strip-like conductor which includes longitudinal edges (7), a resilient contact plate, a connective plate having a first portion and a second portion, and at least one projection: a first bending step for bending the extension such that flat surfaces of the projection are perpendicular to flat surfaces of the resilient contact plate; a second bending step, conducted after the first bending step, for bending the first portion of said conductive plate such that flat surfaces of the resilient contact plate are perpendicular to flat surfaces of the strip-like conductor; and a third bending step, conducted after the second bending step, for bending the first portion of the connective plate such that the flat surfaces of the at least one projection are perpendicular to the flat surfaces of the strip-like conductor.

An electrical terminal having a portion of a contact section overhanging the plane of the stock is made by a method that does not weaken the terminal by the use of a slot or similar structure. A blank is stamped from sheet metal stock. Portions of the blank including the portion to overhang are formed up from the plane of the stock. At least part of the terminal base is formed up from the plane of the stock. The formed base portion is returned to the plane of the stock to rotate the contact section and move the overhanging portion to its final position.

Method of producing a contact terminal (1; 17; 18; 35; 36; 60) provided with a least a first contact surface (4; 25; 26; 64) for contacting e.g. a mating contact area (6; 18; 17) including at least the following steps: a) stamping the contact terminal from a) piece of blank having a substantially flat surface with a predetermined first width, said first contact surface (4; 25; 26; 64) being substantially perpendicular to said flat surface; b) pressing said first contact surface (4; 25; 26; 64) against a first, highly polished surface (27; 66) of a support tool (16), said first polished surface (27; 66) having a first predetermined shape; c) exerting a first predetermined force on said contact terminal in order to deform said first contact surface (4; 25; 26; 64) against said first, highly polished surface (27; 66) of said support tool (16), thus polishing said first contact surface.