Please identify thread

[Tom Walker]

I need to re-new the vacuum pipe nipple which screws into the distributor body. Can any Barners identify the thread please? It looks like 3/8x24, or 1/8th NPT, but neither seems quite right.

Much appreciated, Tom.

 

[Lawson Cox]

I know that this doesn't help much, but it is the same as the wiper motor fitting on the intake.

 

[Mart]

Tom, I think it's 3/8 UNF. (28 tpi is it?) I'm pretty sure I've put a brake pipe fitting in there before now. The correct fitting is a short brass fitting with a sort of tapered olive.

Mart.

Edit: Just went up the garage and a 3/8 UNF bolt screws in nicely. 3/8 UNF is 28tpi - I checked that too.

 

[hotcoupe]

tom, i believe the correct name for the fitting in question is "double compression nut", i can`t verify the size and thread count. btw, this is the other Tom Walker.
tom

 

[Kube]

It's 3/8 - 24 for certain. The fitting was a special compression type made exclusively for Ford.

 

[Mart]

Fair enough - there isn't enough thread length for the pitch error to show up.

Are the fittings available?

Mart.

 

[rotorwrench]

Here is a link to an outfit that has those type fittings.
http://www.fastfittings.com/double-comp-fittings

 

[Tom Walker]

Thanks guys, I will make one out of an old bolt.

 

[Lawson Cox]

Thanks guys, I will make one out of an old bolt.

Rots of ruck.