Not a challenge at all. They are designed for a specific purpose. Light duty fastening. I don't believe holding a seat to the floor would be considered light duty. I've seen plenty used in the wrong application and seen them fail. And the friction from bolt to nutsert corrosion will 99% of the time overcome the compression friction applied when installing these things. No matter if the "light duty" nutsert version or the serrated "heavy duty" version. But I'm not here to tell you how to build your truck. Just sharing my experience.
