From a similar thread today.
Originally Posted by JRTJH
If you install a pedestal table, be careful not to screw through the slide floor as the point on "too long screws" can tear the carpet/vinyl when the slide comes in. If your dining area is not in a slide, be careful because there may be a tank, a ROMEX run, a water line or a heat duct directly under the floor. Screws driven too deeply can penetrate any of those structures.....
I made the mistake of using longer screws to fix mine and have the cuts in my kitchen flooring to prove it.
2010 Cougar 30RKS
2015 GMC Sierra Max Trailer
"Drinks for 6, Dinner for 4, Sleeps 2"