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tx_jayhawk

Well Known Member
Does anyone know the right screw size for the standard AN5812 pitot tube attach holes? It seems to be smaller than a #6, but bigger then a #4. M4 doesn't seem to work either?

Does anyone know what it should be?

Thanks,
Scott
7A Finishing
 
tx_jayhawk said:
Does anyone know the right screw size for the standard AN5812 pitot tube attach holes? It seems to be smaller than a #6, but bigger then a #4. M4 doesn't seem to work either?

Does anyone know what it should be?

Thanks,
Scott
7A Finishing
Click to expand...

I just happen to have an AN 5814-1 sitting in a box, on this computer desk. The instructions for this (14) model, show four 10-32 size screws.
 
Most pitots use 6-40 (fine thread). I don't know why they picked this very uncommon size. I re-tapped mine to 6-32. Works fine.
 
Thanks guys. Anyone know a readily available (local) source of 6-40 screws? I think that must be the size of my tube.

Did it not ruin the thread entirely to tap it out to 6-32?
 
tx_jayhawk said:
Thanks guys. Anyone know a readily available (local) source of 6-40 screws? I think that must be the size of my tube.

Did it not ruin the thread entirely to tap it out to 6-32?
Click to expand...

Nope look fine. Still holding in my 6A built 4 years ago too. I did not drill to tap size.
 
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