Design engineers routinely rely on bolted joints, yet most guidance focuses on axial stiffness—often overlooking moment (pitch) stiffness, which can dominate compliance in ...

They can complicate analysis because even small assemblies can have bolts, screws, rivets, and weld joints, some with preloads. Still, there are ways to consider fastener reactions, says David Dearth, ...

Tightening a structural-steel bolt, tiny spurts of orange silicone spread out from a washer beneath the nut. Satisfied, the ironworker moves on to the next bolt. There is nothing new about direct ...