UNI grounding clamp according to DIN EN 62561-1, for integrating mounting systems, e.g. for PV systems, into the functional potential equalization. Functional grounding with conductor color, possibly black, and lightning protection potential equalization according to DIN EN 62305-3 VDE 0185-305-3. The contact plate intermediate element made of stainless steel allows for the connection of different conductor materials such as Cu, Al, SttZn, and stainless steel with standard mounting systems, e.g. made of aluminum, without the risk of contact corrosion. Design with hammer head screw M10, locking nut, and double overhang, e.g. for the through-wiring of profiles. UEK 8.10 AQ4 50 HKSM10 V2A.