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  #1 (permalink)  
Old 05-30-2006, 12:30 PM
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11/16-11 Bolt

Guy's I need an 11/16-11 bolt for the suspension of my Cady. I've looked everywhere and can't find this odd size. It seems they only make 5/8 or 3/4 bolts. Any idea where I might be able to get one

Thanks Rick

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Old 05-30-2006, 12:39 PM
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What year Caddy? Dealership? Could it be metric? Could you go bigger or smaller?
Mark
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Old 05-30-2006, 04:22 PM
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It's a 37 Cady. Metric will not work. No dealer parts. Check out my journal for a more detailed view.
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Old 05-30-2006, 11:44 PM
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Anyone with a lathe can turn you out a bolt pretty quick using hex material.
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Old 05-31-2006, 09:00 AM
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stop looking at hardwear and auto stores... and go throuh industrial suppliers.

key up on the net for places like these:
MSC
Harbor freight
Grainger

most of these places have what ever you need.... the only thing is they have millions of part numbers, so you gotta find the right one, mabe a online catalogue.

prolly cost ya 20 dollars after shipping.. but better than going to a machine shop and paying shop rate.
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Old 05-31-2006, 09:45 AM
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Also check out McMaster-Carr (www.mcmaster.com).

Industrial supply - extensive online catalog - and they sell to the public.

Pricey though.
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Old 05-31-2006, 10:09 AM
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I am not positive but I think a big cummins diesel uses 11/16 head bolts. If you have a big truck repair shop or dealer close by you might check with them. You might find something that will work.
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Old 05-31-2006, 11:13 AM
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You've tried "bolt" supply stores in your neighborhood, e.g. Abilene Bolt? They probably have a minimum sale but most industrial suppliers will sell to walk-ins too. Often the best source is to ask your hardware store where they get their bolts from.
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Old 06-01-2006, 01:39 PM
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Thanks for the replies. I never thought about a head bolt. I used to work in a diesel shop and from what I remember they may very well be 11/16.

As far as bolt suppliers, Abilene has quite an extensive supply of them servicing the oil drilling industry; I've checked them all and none have any.

Keep the ideas coming and I'll keep looking.

Rick
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Old 11-18-2007, 08:10 PM
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Did you find a bolt?

Hi,
I'm looking for a similar bolt for my 1937 Buick rear suspension. It's about 3.5" long & threaded all the way.
Did you find one?
Thanks,
Steve
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Old 11-18-2007, 08:39 PM
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I have a local Nut & bolt place here .

usually if they can't get it you don't need it

I will give them a call if you would like ..or you can call them your self

352-732-3904
Southern Blade & Bolt

Don't bother looking on the Web for them
Its a old time mom & pop thing





R
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Old 11-19-2007, 08:22 AM
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Still No Luck

Hi,
Thanks for the lead but Southern doesn't have it either!
Steve
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Old 11-19-2007, 08:44 AM
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It's an obsolete size - the older Ford tie rod ends have an 11/16" lock nut - and that's about the last usage that I know. Fastenal doesn't have them and that would be my last gasp place to look - and I even used to have a tap.
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Old 11-19-2007, 09:01 AM
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Like Dave said, that is one of those oddball thread sizes, most likely specified by some engineer who didn't know that theads were soon to become standardized. ( or a scottish engineer, those guys are stubborn )

I looked and looked for a NUT of that size a while back, it was for the Seagrave fire truck. I found nothing, and the guy didn't take me up on my offer to make him a few.

I did find a die of that size and pitch,
http://www.shoprutlandtool.com/webap...roductId=10144

But it is only a re threader.

It is an easy task for any machine shop (or anyone with a lathe with thread cutting capabilities and a 60* lathe bit),to make a new bolt with that thread .

You wouldn't even have to make it out of hex bar stock, it could cut thread on the entire length and put nuts on the end...(ends?)

Can you substitute a new bolt of a larger size and drill and tap new threads in the part you are trying to match up to, to accept that size?



Later, mikey
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Old 11-19-2007, 10:23 AM
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[

Can you substitute a new bolt of a larger size and drill and tap new threads in the part you are trying to match up to, to accept that size?



Later, mikey[/QUOTE]

That is what I would do after spending some time and effort to find the original size..going to a 5/8 fine thread should not be all that difficult..

Sam
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