From Stress Indicators Inc.
When design engineers specify fasteners for product assemblies, systems or structures, they typically calculate the preload required for each bolted joint, then choose
fasteners to meet those requirements based on their strength and material properties.
However, not all bolted joints in a design or installation have equal importance. In addition to these requirements, special consideration must be given to bolted joints that are
critical to product operation, safety and reliability.
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