Standard Density Connector Cable Mount Screw Black. Female plug terminal blocks feature a clamping-yoke screw system that enables you to connect wires with a straight outlet direction in a 3.5 mm pitch. The clamping yoke steel is hardened and zinc-chromed plated. The terminals are two-part and the current carrying parts of these are tin plated copper alloy. Features and Benefits. Female plug Screw termination Rated current relates to the rated cross-section and min. number of poles Easy wiring thanks to yoke clamp connection