Nikon NIKKOR Z 180-600mm f/5.6-6.3 VR Lens (Z) - Manual (Page 30)

• Be sure the tripod collar ring attachment screw is fully tightened. If the tripod
collar ring attachment screw is loose, it could pop out unexpectedly and cause
the lens to fall, potentially resulting in injury or product malfunction.
• When closing the tripod collar ring, keep your fingers out of the gap between
the tripod collar ring attachment screw and its socket.
30 Using the Tripod Collar Ring