Set screw size for overhead vent knob

[Mike A]

Anyone know the size of the small set screw for the overhead vent knob on a 1980 231?  Last shop that removed the overhead panel lost it. Luckily it was set in the “on” position. 

 

Thanks

[Hank]

If you actually have the knob itself, just visit a haedware store and test different machine screws to find one that fits. Then look fir a set screw the same size. I'd guess #4-40 or #6-32, but it's only a guess. You'll also want a little teeny Allen wrench to fit jt.

[Mike A]

That’s going to be my plan

[N201MKTurbo]

That would be an 8-32 dog nose set screw with hex drive 5/16 long

 

 

Edited April 20, 2019 by N201MKTurbo

[m20kmooney]

Since the knob is off It may not be a bad idea to take apart the rest of ths mechanism a little and spray some triflow in it. That mechanism probably never gets any lubrication and it’s not easy to find parts. I did that when I took the interior out and very happy I did.

[Two Oh One]

On 4/20/2019 at 6:20 AM, N201MKTurbo said:

That would be an 8-32 dog nose set screw with hex drive 5/16 long

 

 

Mooneyspace community for the win!! 

It's driven by a 5/64 hex wrench if I recall.

[carusoam]

The power of MS at your fingertips...

-a-

[thinwing]

8/32 for a vent knob!...that sounds huge to me..I would have guessed 4/40 but what do I know?