Trouble printing small thin pole
Basically, you print too hot (and fast) without enough cooling. The deformed small pin in your image is a perfect example of depositing new layers onto too hot (not cooled down enough) prior layers.

You can easily solve this by printing two identical parts spaced apart from each other. This allows the layers to cool before the next is deposited. 

From mastering Ultimaker Cura:


  When printing a series of small parts, print them all together. The
  travel time between the parts is often enough time for the layers to
  cool without changing your settings.


If you do want this to print as a single piece, you need to:


tune down hotend temperature (use the minimum temperature that gives good print results, printing a temperature tower will help to determine this), 
increase minimal layer time (may not always work as speed will not be lowered under the minimum printing speed) and
increase part cooling fan percentage (or print a better fan duct that allows for more cooling air to reach the print; many fan ducts are too convergent, the pressure increase is then too big for the fan to effectively push air through it).