What is the maximum stress a fastener can withstand for a specified number of repeated load cycles prior to its failure?

The maximum stress a fastener can withstand for a specified number of repeated load cycles prior to failure is typically defined by its fatigue limit or endurance limit, which is influenced by material properties, load conditions, and environmental factors. This limit can often be represented by S-N curves, which plot stress (S) against the number of cycles to failure (N). For precise applications, it's essential to consider safety factors and the specific loading conditions to ensure reliability and integrity under cyclic loads.