Help identifying bolt?

Im on a journey to replace all the clamps/fasteners in this engine bay with zinc hardware and im stuck on valve cover bolts. Does anyone know where i can find detailed info on the oem specs of this bolt? Id really like to be sure of what particular strength rating it should be, loctite/torque specs, length and pitch size… so far ive deduced 10mm and 1.0 pitch… flanged? Flat and lock? idk these things are so rusted

Maybe im being excessive and should just use whatever bolts fit but im a little insane

any help appreciated bros

 

Im sure someone here will know the specifications. Personally Ive found local ace hardware to have the best on hand assortment of good higher grade bolts. If you dont get an answer, take it off and get it matched up. The ones supplied to the big box hardware stores HD/Lowes are the shit ones that youre worried about.

 

have you tried loosening that bolt at all? I am trying desperately to recall the brand spray I use for such things but its escaping me. Almost driving me mad.

 

91553-80628

 

Kroil?

 

no i havent even touched it yet. Last thing i need is a bolt snapped off in the head LOL. I definitely plan on using kroil or something for a few days beforehand.

 

wow i didnt even realize that back one was a stud and nut… good to know. I’ll likely just buy these oem ones… but those pretty yellow zinc ones though ;..(

 

Here's a good source for metric hardware, not just nuts and bolts: https://belmetric.com/

 

this is amazing thank you so much. way better than vague chinese stuff…

 

Fucking kroil thats it.

 

McMaster Carr is pretty useful as well for various machined parts. Def saving that site as it looks way easier to navigate.

 

holding plastic/composite valve cover, definitely grade 12.9 Dang 2010 and they look like that, should get some fluid film or crown coating or something on that truck. The FSM has all you need for torque values and can be found out there.