“Multi-layer composite structure, and method for forming a multi-layer composite structure” a multi-layer composite structure (52) with fastener integrated with a conductive layer surface lightning protection interconnect employs a conductive layer (72) with an inner surface (61) and a plurality of chamfered recesses (68) forming countersinks (74) on an outer surface (59). a composite layer of carbon fiber reinforced plastic (cfrp) is disposed on the inner surface (61) of the conductive layer (72) and conforms to the shape of the surface. a plurality of holes (70) extend through the plurality of chamfered recesses (68) in the conductive layer (72) and the contiguous cfrp layer such that the conductive layer (72) defines a countersink portion extending into the apertures of the plurality of holes (70). the chamfered recesses (68) in the conductive layer (72) provide an electrically conductive surface area that contacts conductive countersunk fasteners installed within the plurality of holes (70) to allow current sharing between neighboring fastener groups (78).
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