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Previously we reported to SAE 2002 the basic principles in materials selections for the fastening of plastics. In this current paper, we will try to increase the understanding of the automotive community regarding the usefulness and applicability of aluminum made self-tapping screws in the fastening of various thermoplastic components. Utilization of the light alloys for the manufacturing of fasteners for plastic applications allowed us to manage efficiently the stiffness considerations, short- and long-term performance of the assembled plastic components. The results presented in this study will help designers, technologists, thermoplastic and fastener developers and fastener manufacturers, to optimize mechanical performance of assembled automotive components, where self-tapping screws will be used.

In this current paper, we will try to increase the understanding of the engineering community regarding the usefulness and applicability of aluminum made self-tapping screws in fastening of various automotive thermoplastic parts. Utilization of the light alloys for manufacturing of fasteners for plastics applications allowed us to manage the stiffness considerations, short-term (strength) and long-term (life) performance of the assembled plastic parts. The results presented in this study will help designers, technologists, plastics and fasteners developers and manufacturers, to optimize mechanical performance of assembled automotive thermoplastic parts, where self-tapping screws will be used.