In various representative aspects, an apparatus for securing solar panels to a rail support guide, while facilitating grounding by a common grounding wire. The apparatus is an electrically conductive lay-in-lug fastener, which facilitates multiple rows of solar panels to be electrically bonded to each other. The apparatus includes a lug member for securing the grounding wire. In doing so, the structure for securing the grounding wire is at an acute angle to the frame, enabling a wrench to be used even in space-challenged locations.