Hi Josh, I've continued to use 600 lbs for the 1.5" bolts as I've re-torqued them occasionally. I've used a 2-1/4" socket for those but the 2-3/16" you listed may be a better fit, I'm not sure.
I think bolt #7 is actually a 1-13/16" nut, 1-1/8" stud, torqued to 400 lbs. Perhaps you should double check that one to be sure? I've needed to use a 1-1/2" Deep Socket on # 1 as it is a longer stud to allow two nuts to sandwich a washer with a stud welded on for a grounding cable from the mast step. The other values you've listed (and the tef-gel) are what I've used before. Ken H. On 2 January 2018 at 16:18, Josh Muckley via CnC-List <cnc-list@cnc-list.com > wrote: > Ok Guys, > Since I have the mast out, this provides the rare opportunity to access > ALL of the keel bolts. I've measured each of the bolt and nut diameters > and checked the archives for torque specs. I intend to buy a toque > multiplier and the appropriate sized sockets. I think I can do it for less > than the yard is going to charge and I'll come out of it with some tools. > I'll also be able to tell myself that it was done correctly. > > That being said it sounds like the best practices are are follows: > - be on the hard > - loosen the bolts one at a time, clean, and lubricate with tef-gel > - reinstall and torque at progressively higher levels. > > I was unable to find the torque spec for my 1.5" bolt in the website but > Ken Heaton cited 600lbs in one of his past responses. > > Keel bolts (fwd to aft): > Nut stud torque > 1 - 1 1/2 (38mm) 1 (25mm) 350 > 2 - 2 3/16 (56mm) 1 1/2 (38mm) 600? > 3 - 2 3/16 (56mm) 1 1/2 (38mm) 600? > 4 - 2 3/16 (56mm) 1 1/2 (38mm) 600? > 5 - 1 7/8 (47.5mm)1 1/4 (32mm) 450 > 6 - 2 3/16 (56mm) 1 1/2 (38mm) 600? > 7 - 1 1/2 (38mm) 1 (25mm) 350 > 8 - 3/4 (19.5mm) 1/2 (13mm) 80 > > > *Anything I'm missing?* > > > Thanks, > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > >
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