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Old 05-05-2021, 11:31   #1
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Keel bolts size and threads

Hello everyone,
I need to change my bolts keel on my SO 52.2 of 2000..
No reply from Jeanneau regarding the 2 needed bolts size and the threads bolts also...

Anyone's can help me on this one?

Thks

Dany
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Old 05-05-2021, 13:42   #2
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Re: Keel bolts size and threads

Greetings and welcome aboard the CF, Dany.
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Old 05-05-2021, 13:42   #3
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Re: Keel bolts size and threads

I trust you tried googling in general and searching here at CF. Attached is a Beneteau document. Likely very similar if not the same. Torque is as important as size and material.
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File Type: pdf Keel Bolts.pdf (213.5 KB, 66 views)
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Old 05-05-2021, 14:40   #4
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Re: Keel bolts size and threads

Seems that this is for bolts keel...mine are nuts inside...I miss explain
So looking for nuts keel specs for my so 52.2 from 2000
Thks all

Dany
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Old 06-05-2021, 14:54   #5
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Re: Keel bolts size and threads

Is it possible to measure the nut dimensions and also measure the thread spacing on another bolt on your keel? A good hardware store or online supplier should be able to supply them from that info.

And where are the former nuts you are replacing? If they rusted then probably all your keel attachments are suspect.
As mentioned above the torque on the bolts is important. I suggest you check the installation and torque of all keel nuts.
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Old 06-05-2021, 15:10   #6
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Re: Keel bolts size and threads

I know that I have M36 and M20 nuts....threads I don't know and unable to access the boat since it is in Grenada and me in Canada 😀
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Old 06-05-2021, 22:49   #7
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Re: Keel bolts size and threads

You need to talk to Jeanneau via the local Jeanneau agent quoting the hull number (on the starboard side near the toenail for my SO34.2). I did this recently and got the information back overnight.
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Old 07-05-2021, 02:46   #8
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Re: Keel bolts size and threads

I will try that...again...they never reply
Thks
D
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Old 05-06-2021, 04:31   #9
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Re: Keel bolts size and threads

Please remember that torque numbers are for solid bolts in good condition. If you have serious corrosion, the bolts will stretch or fail if you try to tighten them up to the original specifications.
Could you post some photos of the keel to hull joint on the outside and what the nuts look like inside.
Why are you tightening them up?
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Old 05-06-2021, 04:51   #10
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Re: Keel bolts size and threads

OK. Their keel bolts come in 13, 20, and 30 mm versions. A 13 mm bolt is kind of odd, and you have one of the larger boats, so dollars to doughnuts your keel bolts are 20x1.5 or 30x2.0 metric threads. Nuts are not expensive, and you're going a long way to a location where you might not find nuts that large readily, so get yourself a set of each and then try explaining to TSA or equivalent why they are in your luggage.

Good luck with it.
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Old 05-06-2021, 12:06   #11
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Re: Keel bolts size and threads

Hi. Could you please explain why you need to change them...this will help everyone. Leaking, rust, keel loose, surveyor...?
Thank you.
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