A fastener including a pin member with an elongated shank having a first end, a second end opposite the first end, a cylindrical shank portion having an outer surface, a head located at the first end of the elongated shank, the head including a bearing surface located on the underside of the head, and a threaded portion located at the second end of the elongated shank. The fastener includes a washer installed on the pin member against the bearing surface of the head of the pin member. The washer includes an outer surface and at least one dielectric gasket layer located on the outer surface of the washer.