<p>This study explores the pull-through performance of clip angles in thin-walled cold-formed steel (CFS) connections, combining experimental investigations with numerical modeling to promote more efficient and sustainable structural design. Controlled pull-through tests were first carried out to characterize failure modes and tensile load capacities. A validated finite element model (FEM) developed in ABAQUS was then used for an extensive parametric study, significantly reducing physical testing needs and resource consumption. Key parameters influencing pull-through resistance such as clip angle geometry, screw dimensions, screw rotation, and bending deformation of the base plate (the thin sheet adjacent to the screw threads) were systematically examined. Notably, the deformation of the base plate, typically neglected in prior research and design standards, was found to critically impact performance. A revised design equation for pull-through strength is proposed, addressing existing inaccuracies and contributing to safer, more reliable, and material-efficient CFS construction practices. In addition, a simple beam model was used to evaluate the initial bending stiffness of clip angle connections to thin plates and compare it with connections to hot-rolled plates. The results offer practical guidance for engineers aiming to optimize structural performance with sustainability in mind.</p>