Rust on front bed ‘rail’

I have rust forming in one of the holes on my front bed ‘rail’ (sorry, I don’t know what this actually is called) below the rear window. How should I fix this? Is there a plug I could put in these?
Thanks!

 

I personally wouldn’t worry, it’s only the nut-insert that’s got a little bit of surface rust. But to fix it properly, clean it completely (maybe need to sand) but get rid of everything, then put some paint on an q-tip and paint it. Then plug it with something frorm of plastic plug homedepot / lows / auto store.

 

pop it with a shot of this. Carry on with life.

 

The dealership will fix this... I was already going to mine, to deal with a couple other issues, and just added it to the list.

 

Pee on it

 

Put some bolts in there with antiseaze

 

Agree with this one use the Copper Antiseaze longer lasting and will not dry out from heat like the zinc based type.

 

i put some stainless screws will a little anti seize in mine. m6 if I remember correctly