Simple question about 1990 302 5.0 HO
 

Sorry to bother you,but I’m tired of buying the wrong size bolts. I’m trying to put new screws in the plenum cover on my 302 in my 1953 F-100. I would like to put them back if possible in polished stainless. I’ve seen where these bolts are 8-32 x 1/2 but are they fine thread,course thread or other? Any help you could send my way would be appreciated.