Hollow Dowel In mechanical structures, automation equipment, and all kinds of assemblies, there’s a simple-looking but crucial part that’s often overlooked: the hollow dowel. It’s not as eye-catching as a screw, and you probably don’t hear it mentioned as often as nuts or bolts. But when it comes to locating, supporting, and keeping structures stable, hollow dowels often play an irreplaceable role. --- 1. What Is a Hollow Dowel, and Why Do We Need It in a Structure? A hollow