I’m In the process of changing out my exhaust and decided to do my spark plugs while everything is apart.
One of my coil pack fasteners should be replaced as the torx head is getting wonky. Do I need a special type of fastener to prevent galvanic corrosion since it is screwed into the aluminum head?
The existing ones look to be galvanized or zinc coated.

 

I've never worried too much about it and when replacing OEM fasteners usually use stainless.

 

Pelican parts sells them for .75 each.

 

Further research found that stainless is fine. Evidently it is common in the aircraft industry to use stainless fasteners into aluminum.
i went to Ace Hardware and got what I needed. Thanks for the responses.