Shear connectors were essential for achieving composite behavior. Because of the ease and quickness of building composite structures, their application has increased in recent decades. These days, head-stud (HS) connectors are widely used to achieve the composite action. The connection’s effectiveness is highly dependent on the connector’s and concrete’s strength. Using slab gradation and different shear connector shapes, this study shows how to raise the shear-carrying capacity (SCC) of HS shear connectors. Using finite element analysis (FEM), we investigated the shear connector’s ductility and failure mode to determine the effectiveness of the concrete gradation and shear connector shape concepts. We conducted the pullout test using the ABAQUS software’s finite element analysis. The parametric study also considered Zone 1 and Zone 2 concrete grade parameters. We compared the effectiveness of the HS with the graded and standard slab tests. To get better results, Zone 1 uses a variety of combinations of M25 and M30, while Zone 2 employs a variety of concrete grades (M30, M40, M50adobe, and M40) with eighteen possible combinations.