The Ford Barn

pgerhardt · 08-09-2019, 05:19 PM

What size is the screw that holds the horn cover on the model A horn (mine is a Stewart Warner)?

It looked like a 10-32, but it is not. The thread count is 32, the size is however, slightly smaller. What do I care? Because removing the horn cover for cleaning and lubrication is something that is needed once in a while, but getting the horn cover screw started is a PIA while the horn is on the car. So I bought these really nice nylon (no chance of shorting out the brush which rides under this screw) one inch (the original screw is 3/4") 10-32 screw. I thought I would put a slight taper on the end of this screw so finding and starting the screw in the threaded hole in the horn frame would be a snap!

Of course that won't work since the hole in the horn frame is slightly too small!

I could (and probably will) run a 10-32 tap through the hole and make it the right size for my screw, but I would rather keep the horn all original and find the correct size screw. Could it be metric?

davehc · 08-09-2019, 07:16 PM

https://www.brattons.com/horn-cover-screw.html

Jon-Ohio · 08-09-2019, 08:29 PM

8-32 x 13/16" according to Brattons catalog

pgerhardt · 08-09-2019, 09:53 PM

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Found them. THANKS!!

08-09-2019, 05:19 PM	#1
pgerhardt Senior Member Join Date: Jul 2014 Location: Danbury Ct Posts: 1,254	Model A horn question What size is the screw that holds the horn cover on the model A horn (mine is a Stewart Warner)? It looked like a 10-32, but it is not. The thread count is 32, the size is however, slightly smaller. What do I care? Because removing the horn cover for cleaning and lubrication is something that is needed once in a while, but getting the horn cover screw started is a PIA while the horn is on the car. So I bought these really nice nylon (no chance of shorting out the brush which rides under this screw) one inch (the original screw is 3/4") 10-32 screw. I thought I would put a slight taper on the end of this screw so finding and starting the screw in the threaded hole in the horn frame would be a snap! Of course that won't work since the hole in the horn frame is slightly too small! I could (and probably will) run a 10-32 tap through the hole and make it the right size for my screw, but I would rather keep the horn all original and find the correct size screw. Could it be metric?

08-09-2019, 07:16 PM	#2
davehc Senior Member Join Date: Aug 2012 Location: Adrian , Mich. Posts: 386	Re: Model A horn question https://www.brattons.com/horn-cover-screw.html

08-09-2019, 08:29 PM	#3
Jon-Ohio Senior Member Join Date: May 2010 Posts: 191	Re: Model A horn question 8-32 x 13/16" according to Brattons catalog

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