Bolted joints are widely used to assemble components. That is not surprising, since they are cost effective while being relatively easy to assemble and disassemble. Bolted joints are extremely reliable through the life of the product—as long as the bolt remains tight. Unfortunately, bolts often loosen when placed in service, and they can become a source reliability problems.(…)
via Simple Test Determines Cause of Loose Fasteners | 2020-10-08 | ASSEMBLY.