Rail Clip Assembly A rail clip assembly is disclosed herein. The rail clip assembly, in accordance with an embodiment of the present subject matter, comprises a base body attachable to a support surface, wherein the base body defines a cavity at an underside thereof. The base body comprises a first wall that is adjacent the rail when the base body is secured on the support surface. A depression or a recess is configured on the first wall, and a substantially horizontal slot is configured on the base body extending toward the first wall. The assembly further comprises a top body assemblable on the base body. The top body comprises a rail abutting portion that defines a substantially L-shaped surface to abut the rail, and a slot configured on the top body. The assembly further comprises a screw for assembling together the base body and the top body, wherein the screw may be any standard WO 2020/046771 A1 screw with a polygonal head such that a corner of the screw head is fitted inside the depression or the recess in an assembled configuration thereof.