Other costs resulting from fastener failure, such as downtime and lost production, make an even stronger case for consideration of high integrity fastener systems.
There was a time when the periodic repair of mechanical and electrical components was taken for granted. Today, with labor costs at record levels and going up, greater consideration at the design level is being given to the reduction—or even elimination—of maintenance.
Consequently, the designer needs to consider a fastener as a system, and regard the assembled joint as a critical and integral portion of the design, since the joint is normally an area under the highest stress and often the place where failure is most likely to occur. A designer should start with the optimum fastener and design the joint around that, rather than starting with the joint and then looking for the fastener that seems most adequate.