Why are steel dowel pins used when you already have bolts to

pin slotSpring pin fasteners, also known as roll pins, split pins, or slotted spring pins are cylindrical metal pins with a split down their length that allow them to compress and expand when inserted intoThey were linked by a Pin-and-Slot arrangement. Using a specialist X-ray scanner, crucial parameters of the Pin-and-Slot arrangement were measured to 0.1 mm. It is now generally