The knowledge of the mode of action for dowel type fasteners is important for slabs and plain stressed structures in timber construction, because these elements are used for the removal of the shear forces. In order to model certain roof elements from the company Rubner, as roof panels, several data will be required; for instance, the load-bearing capacity and the deformation behavior of the fasteners. The experiments performed for this work are divided into the following three parts: - Load-bearing capacity and deformation behavior of staples, - Series effects of staples and model design, - Deformation properties of full-threaded screws. The main objective of this work is the determination of deformation and load-bearing capacity properties for staples used for roof elements. For this purpose, experiments carried out for single staples and to compare the obtained results with values from technical approvals and standards. The second part of the work deals with series causes by single staples. In addition, small test specimens are produced. The obtained results from these simple shear panels are compared with the results from the model. This part also deals with the determination of the force distribution between the upper and lower planking, by an eccentric application of force into the roof element. In the third part of this work the deformation behavior of full-threaded screws is analyzed for the use in plate structures. A special arrangement of the screws is considered for the initiation, transfer or removal of the loads. The stiffness of screwed element joints are determined by experiments and compared with the technical approvals.