When you remove the rear sway bar on a Touareg or Cayenne, or Q7 for better suspension movement off-road, the rear lower shock bolt is too long and the nut will bottom out on the shoulder of the factory bolt before it will tighten up on the spindle.

This is a high strength Grade 10.9  plated bolt and nylon lock nut that I use to replace the rear lower shock bolt. 

These fit 04-10 Touareg/ Cayenne.
I have a different bolt set to fit alloy spindle 2011+, please inquire for those.