Speaker screws

Curious if anyone knows the size screw/bolts used for the door speakers?

 

my '18 was something like a 1/4"x1 lag bolt

 

I took out the plastic retainers and replaced them with 1/4-20 nutzerts.

 

That’s a really good idea

 

The stock bolts are M6 x 25 I think. I have all mine out currently (same size as the tweeter ones, just longer). They're normal metric bolts, nothing special. I tried to buy ones that were 30mm I think long for Mr. Marv speaker adpaters and they're too short and don't grab to my liking. I got some #12 1 1/2" and 1 1/4" ones (dunno what size yet) Pan head sheet metal screws which should work similar to when you mount a license plate on the bumper. The Nutserts (I have those too) is my last resort, but you should be able to work with Pan head screws (#12) in the length you need and scrap the stock ones.