Throttle arm screws -#8-36

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Rich Eagle
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Throttle arm screws -#8-36

Post by Rich Eagle » Sat Oct 03, 2020 7:58 pm

I presume this has been discussed before but I can't locate a thread. I see my throttle stop and lock screws are #8-36's on my Holley G carburetor. It looks like that is also the size used on some later Holleys. Has someone found a good source for these or are they re-tapping the arms with #8-32s? #8-36 is UNF which is pretty much obsolete now days. The Kingstons seem to be #8-32 and I have a bag full of those screws.
If this has been covered before perhaps someone can point me in that direction.
Thanks
Rich
Gthrottle.jpg
On this carb the stop screw was brass and the lock screw was steel.
When did I do that?
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John kuehn
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Re: Throttle arm screws -#8-36

Post by John kuehn » Sat Oct 03, 2020 8:43 pm

Try fastenersclearinghouse.com. They list that size in several different types of screws.
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Rich Eagle
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Re: Throttle arm screws -#8-36

Post by Rich Eagle » Sat Oct 03, 2020 9:00 pm

Thanks John, I'll give them a look.
Rich
When did I do that?
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Dan McEachern
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Re: Throttle arm screws -#8-36

Post by Dan McEachern » Sun Oct 04, 2020 12:19 am

You might give Russ Potter a call.
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Topic author
Rich Eagle
Posts: 6895
Joined: Fri Jan 04, 2019 10:51 am
First Name: Richard
Last Name: Eagle
* REQUIRED* Type and Year of Model Ts owned: 1909 TR 1914 TR 1915 Rd 1920 Spdstr 1922 Coupe 1925 Tudor
Location: Idaho Falls, ID

Re: Throttle arm screws -#8-36

Post by Rich Eagle » Sun Oct 04, 2020 1:56 pm

Thanks Dan. I found a cache of brass ones on Ebay so I bought them and may have some extras.
I still am wondering if this has been a problem for others. I can't be the first to discover this.
Rich
When did I do that?
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Topic author
Rich Eagle
Posts: 6895
Joined: Fri Jan 04, 2019 10:51 am
First Name: Richard
Last Name: Eagle
* REQUIRED* Type and Year of Model Ts owned: 1909 TR 1914 TR 1915 Rd 1920 Spdstr 1922 Coupe 1925 Tudor
Location: Idaho Falls, ID

Re: Throttle arm screws -#8-36

Post by Rich Eagle » Fri Oct 09, 2020 12:35 pm

New 8-36 screws arrived today. These are cad plated and will work nicely in my Holley Carbs. All of my Model G's used 8-36 and all but a couple of NH's have them. I believe the 2 with 8-32's were rethreaded. A 2 screw Holley also has 8-36 but with filister heads. So I believe 36tpi was standard for Holley and 32tpi was what Kingston used. No one has confirmed or disagreed with this yet.
To meet the minimum order I ordered more than I will need. If there is any interest I will put an ad for them in the classifieds to recover some of my investment. These are a bit longer: 3/8", 5/8" and 1".
The original locking screw was 5/16" and I have seen both 5/8" and 3/4" for the stop screw.
Let me know if interested.
Rich
The brass ones are one the way.
When did I do that?
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