A clamp for securing a module to a rail. The clamp has a bolt having a head and a thread. The clamp includes an insert thread having a threaded aperture for receiving the thread of the bolt. The clamp having a body including an aperture to receive the bolt and wherein a first side of the body abuts the head of the bolt. The body includes a saw-toothed edge on a second side of the body opposing the first side of the body. The clamp includes a nut having a nut aperture for receiving the insert thread and the insert thread facilitating an electrical connection between the bolt and the nut. The nut having a first nut flange and a second nut flange extending toward the head of the bolt and wherein tightening of the bolt causes the nut and the body to approach one another causing the saw-toothed edge to pierce the module and the first nut flange and the second nut flange to engage and pierce notches of the rail.