Ground feature for disk drive head suspension flexures

Various embodiments concern an electrical interconnect of a head suspension. The electrical interconnect can comprise a spring metal layer and a dielectric layer having an aperture with a portion of the spring metal layer being exposed through the dielectric layer within the aperture. The electrical interconnect can further comprise a trace layer disposed on the dielectric layer and extending into the aperture to connect with the spring metal layer. Part of the spring metal layer within the aperture may not be covered by the trace layer. The exposure of the spring metal layer through the aperture can be due to the width of the trace layer being less than the width of the aperture and/or the exposure can be due to expected misregistration. A polymer covercoat can be applied over the aperture to protect the trace layer from corrosion.