The present invention is directed toward clamping apparatus and methods
for holding an item to an electrically conductive structure. In one
embodiment, the clamp includes a strap, a fastener, a cushion, and a
conductive material. The strap provides the structural strength for
holding the item. The fastener is coupled to the strap for securing the
strap to the structure. The cushion is disposed within the strap to at
least partially isolate the item from shock and vibration transmitted
through the strap. The conductive material is held by the cushioning
material at least at a portion of the interior surface of the cushioning
material. The conductive material is electrically coupled to the strap.