arp main stud nut size..
 

I need the nut size for my arp studs to hold down my windage tray. Not the bottom nuts on the stud but the top ones and they didn't come with my build.

Need this info asap as doing this engine right now!

Back from the dead!!!

I am in the same situation right now, and the closest hardware stor is 20 minutes away. Does anyone have info on this?

FYI for anyone that runs into this problem - it's a M10, 1.25 pitch.

Just remember to shim the windage tray if you have a stroker motor