How to properly attach a HV cable to the X-ray tube

The following are excerpts from the 08538 Quick Start Guide: X-ray Tube Installation section.

Apply HV Silicone grease:

Tighten ring nut using hand and 1.5mm hex key per image and video below. Stop when the ring nut flange is 3mm from the HV receptacle:

How to tighten HV cable ring nut: