What size air filter bolt is used on older 2hp Briggs?

[TXmini]

Just bought a replacement air Cleaner with filter but I'm missing the bolt that screws into the carb. This is an older Briggs 2hp engine. It has the straight carb with tank attached. What size bolt is used to hold down air cleaner housing?

 

[slow greg]

assuming its a stock air cleaner with the rubber gasket in place try 10/32 X 2" or just get a longer screw and put a nut down on it then cut it off to the correct length....The screw with the big heads are getting harder to find look for an old guy lawn mower shop