Can these self tapping screws be taken in and out?

[purpleroad]

Got these self tapping screws holding the ply onto the walls of my van. I wanted to put some bolts on the other side so needed to take the ply out so unscrewed these self tappers. They have a self cutting part at end of screw. Is it ok to unscrew them then screw them back in?

 

[Burnerman]

Sure, these are self drilling screws and they can be removed in the usual way.
John
I'll just edit this one to say - as self tapping screws by their nature are very hard and sharp, they will cut the self drilled hole away to some degree - so its probably best not to undo them dozens of times!
J.

 

[DaveHerns]

You can always replace them with ordinary self tappers, slightly bigger ones if the hole gets enlarged

 

[big-all]

i have fitted out several vans and normal twin wood screws will work in seconds without a pilot hole
https://www.toolstation.com/shop/p79120?table=no