I have noticed that you can get what is called a front bumber trim where the license plate would go on the front of the car. It's all aluminum and has two anti theft screws.

Here is what it looks like.



Here are the screws for it:




When I was on the ground kneeling looking at the front of WRX's I noticed that there are two spots to put the screws BUT did not see any type of threading to screw the screws in...

My question is do you have to get a kit or put nuts on those screws if you order a front metal bumper plate trim kit? Or do those screws self tap into the metal?

Thanks :-)
-Nigel