Torque values are typically based on the size of the threaded portion of
the bolt not the nut size or socket size.  It was a little unclear y your
description which you were measuring.  Have you seen my video?  I provided
extra info in the video description.  I'll link it here and copy the
description text too.

https://youtu.be/n6B0IPKQERc

I used the torque values from the link below as a guide.  316 SS
lubricated.

https://www.fastenal.com/content/feds/pdf/Torque%20of%20Stainless%20Steel,%20Non%20ferrous%20Torque.pdf

https://www.boltdepot.com/fastener-information/nuts-washers/us-nut-dimensions.aspx

C&C 37+ Keel bolts (fwd to aft):
    Nut               stud       torque    3:1 multiplier

#1 - 1-1/2        1          255 =          85 x 3
#2 - 2-3/16     1-1/2    615 =          205 x 3
#3 - 2-3/16     1-1/2    615 =          205 x 3
#4 - 2-3/16     1-1/2    615 =          205 x 3
#5 - 1 7/8       1-1/4    465 =          155 x 3
#6 - 2-3/16    1-1/      615 =          205 x 3
#7 - 1-1/2      1            255 =          85 x 3
#8 - 3/4         1/2             38

Here are a few pictures.
https://drive.google.com/folderview?id=1G3HVN_jj0PYa0e5Otk9nwdqVoR4CYTCy

Tef-gel
https://www.ultratef-gel.com/tef-gel/

Looks to me like from the description your bolt matches my #5 bolt.  I got
the sockets on ebay and yes most of them where ~$50.  I made sure to get
deep 6 point sockets 3/4" drive so that my breaker bar and torque
multiplier would fit.

Let me know if you have any other questions.

Josh Muckley
S/V Sea Hawk
1989 C&C 37+
Solomons, MD






On Tue, Jun 26, 2018, 3:14 PM bushmark4--- via CnC-List <
[email protected]> wrote:

> Help! I am working on the torque for my keel bolts; (1985 37 CB); I am
> having difficulty in two areas; No 1. finding a deep well socket for
> tightening the keel bolts; my problem seems to be the size of the bolt; (or
> more likely, my poor measuring); I measure the bolts at 1 3/32; no one
> carries a socket for that size; it seems to translate to between 27 and 28
> metric, and the least expensive deep well sockets I can find are about
> $30-50 bucks apiece;  can anyone point me in the right direction? Am I
> measuring wrong? or is there a standard size I should go with...
> No. 2; do the torque measurement numbers on the Photo album apply to
> centerboard keels and as well as fixed keels?
> any help is appreciated...many thanks
>
> Richard
> s/v Bushmark4; 1985 C&C 37 CB; Ohio River, Mile 596:
>
>
> Richard N. Bush
> 2950 Breckenridge Lane, Suite Nine
> Louisville, Kentucky 40220-1462
> 502-584-7255
>
>
>
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