Assemble circuit boards and other electronic parts with dowel pins that insulate against stray current. These pins prevent short circuits and electromagnetic interference (EMI) that can harm performance and cause malfunctions. They’re also lighter than metal pins if you need to reduce weight in prototypes and moving assemblies. Dowel pins are machined to tight tolerances and have a uniform diameter for a snug fit. Since they can be hard to remove, they are best for fixtures that don't need to be adjusted or taken apart frequently.