The noise in the video certainly does not come from the column. Take your time to read the above posts for understanding!
The following pictures of a slightly different steering gearbox were taken from Wikipedia:
https://en.wikipedia.org/wiki/Steeri...orm_and_sector
Attachment 24170
Attachment 24171
The lower picture shows the die-cast block in its hole that pushes onto the rear of the rack, pushing it onto the pinion; the spring inbetween block and nut; the actual nut for adjustment and the crown securing it.
On our cars the nut does not have a six-sided head, but rather a crown shape. The securing nut is four-sided, size 43mm.