[DeTomaso] Help needed! Metric Harness Eyebolts 11mm X 1.25 pitch

Bjoern Flesland bflesland at gmail.com
Fri Apr 8 17:39:58 EDT 2011


Gents,
I would like to thank all of you that emailed and helped out regarding my
bolt issue.
Much appreciated indeed.
I am now about to order my FIA approved 7/16 UNF eybolts from GT
Fabrications.
Link below:
http://www.gtfabrications.com/product.php?productid=676&cat=1&page=1

Cheers Bjoern




On Sun, Apr 3, 2011 at 11:49 AM, Thomas Tornblom <Thomas.Tornblom at hax.se>wrote:

> 2011-04-03 11:05, Bjoern Flesland skrev:
>
> Guy working on car for me now says:
>>
>> Yes thread sizes are very close – but passenger side has the child seat
>> hook on it and the bolt head says 8.8 That’s METRIC.
>> I believe a stock bolt would have a grade 8 marking instead of a 8.8
>> marking….means it’s a metric bolt in that hole.
>>
>
> The 8.8 marking is the grade of the bolt. It has nothing to do with the
> thread, although metric fasteners are normally marked like that.
>
> I just removed one of the seat belt bolts from my GT5, which is marked 8.8,
> and when I lay the threads of that bolt against a 7/16-20 bolt, the threads
> match perfectly over a length of 1", which an M11x1.25 would not do. The
> 7/16-20 bolt threads easily into the harness nut, and the harness bolt
> threads just as easily into an ARP 7/16-20 12-pt nut.
>
> The seat belts were made by Klippan, Sweden, for an Italian car maker, and
> the bolts have a metric (17 mm) head, and "metric" grade, but still have UNF
> thread. I'm quite confident that you need a 7/16-20 eye bolt.
>
>
>
>> Re. a 7/16-20 bolt he tried he says:
>> It doesn’t tread in by hand, just want YOU to be the one to make the
>> call on the thread size and pitch.
>>
>
> If so, there is likely some damage to the threads in the fastening point.
>
>
>
>> Silly question probably but I ask you guys anyway:
>> Is there a difference between a 7/16-20 UNF and a 7/16-20 SAE bolt?
>>
>
> same thing
>
>
>> Can that be the issue here? Or is it simply metric bolts I need?
>> Cheers Bjoern
>>
>>
> Cheers,
> Thomas
>
>
>>
>>
>> Den 3. apr. 2011 kl. 07:27 skrev
>> <mailto:JDeRyke at aol.com><mailto:JDeRyke at aol.com><mailto:JDeRyke at aol.com
>> ><mailto:JDeRyke at aol.com>JDeRyke at aol.com
>> <mailto:JDeRyke at aol.com>:
>>
>>  In a message dated 4/2/11 3:09:28 PM,
>>> <mailto:thomas at hax.se><mailto:thomas at hax.se><mailto:thomas at hax.se
>>> ><mailto:thomas at hax.se>thomas at hax.se
>>>
>>> <mailto:thomas at hax.se> writes:
>>>
>>> I believe they are 7/16-20 (UNF) thread, not M11. The same thread as
>>>> the half shaft bolts.
>>>>
>>>
>>>
>>> .... and if they are, as Thomas posted, 7/16-20 SAE threads will
>>> almost exactly match. There are several other places on the Pantera
>>> where this occurs and the metric & SAE interchange-such as the tie rod
>>> ends. Use a little thread lube. Good luck- J Deryke
>>>
>> !DSPAM:4d9838a09714267201212!
>>
>
>
> --
> Real life:   Thomas Törnblom             Email:    thomas at hax.se
> Snail mail:  Banvallsvägen 14            Phone:    +46 18 32 31 18
>             S - 754 40 Uppsala, Sweden  Cellular: +46 76 209 8320
>
>



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