1964 m20e cowling screw sizes

[Hradec]

I looked through all the parts manuals And I couldn't find the screw sizes for the side cowls, lower cowl why the bumped out firewall area, top wowl training edge. 2 panels that cover the avionics area below windshield.

Most of of the screws go into tinnerman speednuts. My guess they are #8  could they be #6 or even #10.

Thank you for your help.

Glenn

1964 M20e #311

 

 

[clh]

IIRC, they are for the most part #8.  There are a few #10 on the avionics cover.  (it is not unheard of for the mechanics to substitute #10 if they strip out the #8's)

But then again, I'm just a PP.

 

[Hradec]

1 hour ago, clh said:

IIRC, they are for the most part #8.  There are a few #10 on the avionics cover.  (it is not unheard of for the mechanics to substitute #10 if they strip out the #8's)

But then again, I'm just a PP.

 

On my whole airplane ham-fisted mechanics or owner substituted machine screws with sheet metals screws #4 with #8 and eventually #10. Its so easy to rivet in a nutplate or change a tinnerman.

As my nearly 6 yr project winds down I really want to make the baffling and cowling correct so its easier to take apart and put together for regular maintenance.

Thanks for the help,

Glenn

 

[BrianWilkins]

If you’re replacing them anyway, put in camlocs.  

[Jerry 5TJ]

On my 64 E I would mark the location of oversized or odd screws (odd being something like a sheet metal screw driven into a nut plate) and fix it when I had access.  
After several years I had most of them correct.