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-   -   Tube Valve Stem Size (https://www.fordbarn.com/forum/showthread.php?t=238541)

Y-Blockhead 02-03-2018 05:10 PM

Tube Valve Stem Size
 

Does anyone happen to know the thread size for a inner tube valve stem cap? It is finer than 5/16-24. I see McMaster-Carr has 5/16-18, 20, 24, 27, 28, 32, 40 tpi. Not sure why there are so many different sizes in 5/16" threads.

I need to clean up the threads on a couple nickel valve caps.

Thanks

Synchro909 02-03-2018 06:11 PM

Re: Tube Valve Stem Size
 

Just went to the workshop and measured it for you - 32 tpi.

Y-Blockhead 02-03-2018 07:47 PM

Re: Tube Valve Stem Size
 

Awesome. Thanks Synchro. I'll order one up. I don't think the local Ace will have that size.

Looking at McMaster-Carr prices, I was hoping it was a 5/16-32 as opposed to a 5/16-28 (or another odd size). They want $8.07 for a 5/32 bottoming tap compared to $23.81 for a 27, 28 or 40! :eek::eek:

Synchro909 02-03-2018 08:51 PM

Re: Tube Valve Stem Size
 

Quote:

Originally Posted by Y-Blockhead (Post 1588271)
Awesome. Thanks Synchro. I'll order one up. I don't think the local Ace will have that size.

Looking at McMaster-Carr prices, I was hoping it was a 5/16-32 as opposed to a 5/16-28 (or another odd size). They want $8.07 for a 5/32 bottoming tap compared to $23.81 for a 27, 28 or 40! :eek::eek:

No worries, Y.
32 tpi is probably cheaper exactly because it is so widely used on valve stems.

160B 02-03-2018 11:03 PM

Re: Tube Valve Stem Size
 

There is a valve stem tool available, it is very handy. I have several one for the shop and one in my roadside tool kit. Clears thread on valve stems

https://www.amazon.com/Pit-Posse-Rem...alve+stem+tool

https://www.amazon.com/Valve-Repair-...alve+stem+tool

redmodelt 02-04-2018 02:52 AM

Re: Tube Valve Stem Size
 

He is needing a tap to clean up his caps, not the valve stem.


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