Is it pretty easy to fix this by getting a bolt and nut stud. Drill it out and screw in the new one. Has anyone done this? Any advice? Thanks

Front or back swivel?

Assuming it's in wood, All you have to do is fill screw hole with epoxy, drill hole slightly smaller than stud, and replace stud. A quick fix is to take 1 or 2 toothpicks and put them down into hole, trim them to flush or a 1/2 a tad sticking out,then screw stud back in before removing excess toothpicks sticking out.