The Ford Barn

Terry, NJ · 05-23-2022, 04:44 PM

I just spent last two hours trying to figure out the thread size of the choke arm nut. Anybody know? It looks like 32 pitch, but what diameter? Too big for a # 8 and too small for a #10! It looks like a #9 X 32. If the is such a thing. Henry had those carbs made by a French Co, Zenith, and they used a lot of metric sizes. TIA!
Terry

Bob C · 05-23-2022, 05:02 PM

I have the Gordon Biggar carb book and it shows 8-36 thread.

JoeCB · 05-24-2022, 08:55 AM

If it's 8 -36, that is one of the old American National Standard thread sizes. #8 screw came in 30 , 32, and 36 tpi. You should still be able to find 8 - 32 and 8 -36 at the hardware store.
Joe B

katy · 05-24-2022, 09:58 AM

Mikes, P/N A9547MB, carburetor choke arm nut and washer, 8-36 thread includes a star washer.

Terry, NJ · 05-24-2022, 05:56 PM

Yeah! I went looking for my possible 8 X 36 tap, no luck! I did find a new, never been used, 10 X 30 tap I didn't know I had. Surprise, surprise! But that isn't helping me. I'll try that! Thanks again !
Terry

38convsedan · 05-24-2022, 05:59 PM

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Good luck with your project

05-23-2022, 05:02 PM	#2
Bob C Senior Member Join Date: May 2010 Location: So Cal Posts: 8,741	Re: Choke Arm Nut ? I have the Gordon Biggar carb book and it shows 8-36 thread.

05-24-2022, 08:55 AM	#3
JoeCB Senior Member Join Date: Nov 2018 Location: Farmington MI Posts: 284	Re: Choke Arm Nut ? If it's 8 -36, that is one of the old American National Standard thread sizes. #8 screw came in 30 , 32, and 36 tpi. You should still be able to find 8 - 32 and 8 -36 at the hardware store. Joe B

05-24-2022, 09:58 AM	#4
katy Senior Member Join Date: Jun 2015 Location: Red Deer, Alberta Posts: 5,042	Re: Choke Arm Nut ? Mikes, P/N A9547MB, carburetor choke arm nut and washer, 8-36 thread includes a star washer. __________________ If you don't hear a rumor by 10 AM, start one!. Got my education out behind the barn!

05-24-2022, 05:56 PM	#5
Terry, NJ Senior Member Join Date: May 2010 Location: Bucks Co, Pa Posts: 3,740	Re: Choke Arm Nut ? Yeah! I went looking for my possible 8 X 36 tap, no luck! I did find a new, never been used, 10 X 30 tap I didn't know I had. Surprise, surprise! But that isn't helping me. I'll try that! Thanks again ! Terry

05-24-2022, 05:59 PM	#6
38convsedan Senior Member Join Date: May 2022 Location: Lakeland Florida Posts: 377	Re: Choke Arm Nut ? Sponsored Links (Register now to hide all advertisements) Good luck with your project

05-23-2022, 04:44 PM	#1
Terry, NJ Senior Member Join Date: May 2010 Location: Bucks Co, Pa Posts: 3,740	Choke Arm Nut ? I just spent last two hours trying to figure out the thread size of the choke arm nut. Anybody know? It looks like 32 pitch, but what diameter? Too big for a # 8 and too small for a #10! It looks like a #9 X 32. If the is such a thing. Henry had those carbs made by a French Co, Zenith, and they used a lot of metric sizes. TIA! Terry