32 firewall bolt size

33wire

Junior Member
Helllo, can anyone tell me the proper bolt diameter Henry used on the two upper firewall -to body bolts ; used also hold the hood hinge bracket to the body? Thanks ...Greg
 
The holes in the flange on the body are 5/16" and the holes that hold the bracket to the f/w are 1/4". I've always used 1/4-20's in the 1/4 holes but Ford might have used 12-24's, I don't know for sure.
 
The originals were 5/16-18 x 1 1/8" round head slotted screws. The other two screws for the rear hood hinge bracket were #12-24 x 5/8" flat head, slotted.
 
The 12/24 X 5/8 Flat head held all the way thru 1935 (At Least) for the hood supports and even at the radiator end too, just a little shorter!!
 
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