On Jun 17, 2010, at 2:43 PM, Roger Whittaker wrote:

> dear bolter
> you know one could always go to a wreck westie and pull the seat
> belt bolts
> form the machine and there you go ... right size every time ...
> there is one in colorado at the copart ...it used to be mine ...

Wish it were still there- I couldn't get them to acknowledge that it
was there.

YMMV,

Mr. BZ

> sigh
>
> On Thu, Jun 17, 2010 at 1:30 PM, Dave Mcneely <mcneely4@cox.net>
> wrote:
>
>> ---- John Reynolds <transporterjr@YAHOO.COM> wrote:
>>> Seat belt bolts are, for the most part, size 7/16-20 the world
>>> over -
>> even on non-USA cars.  GM switched to M12 a number of years ago,
>> now they
>> have a global standard and Europe insisted it on being 7/16-20, so
>> new GM
>> designs will (again) be 7/16-20!
>>>
>>> The US MVSS  209(motor Vechicle Safety Spec) originally specified
>>> 1/2-20
>> and 7/16-20 (some early cars used 1/2-20), it now has added "or
>> metric
>> equivalent".  Funny thing is, US made cars had seat belt bolt
>> standards to
>> pass, imported cars only had to have the entire system pass, so
>> some imports
>> had M10 size bolts, but even cars that were never going to be made
>> here
>> generally used the 7/16-20 size.
>>>
>>> So what Dave says below is true - the bolts are actually 7/16-20.
>>>
>>> John -
>>> Who has has been involved in testing and design of "few" seat belt
>>> bolts
>> for a few decades now.
>>
>> No, the seat belt bolts are actually 11x1.25.  They ARE metric
>> bolts, with
>> the head marked 8.8 and some other things.  David Beierl knew this,
>> and
>> chastised me mildly for not knowing it, since I had the bolts right
>> in front
>> of me.  But, the 7/16-20 bolts fit and work -- the difference being
>> trivial,
>> as David Beierl stated in his last post quoted below.
>>
>> Eleven mm bolts seem impossible to find locally.  I tried a large
>> number of
>> vendors, including the best stocked hardware store around here.
>> Metric
>> bolts in even mm sizes are readily available, so both 10 and 12 mm
>> bolts are
>> there for the buying.  Not elevens.
>>
>>>> Just so happens that 7/16-20 UNF is practically identical to
>>>> M11x1.25; 1% on diameter and 2% on pitch.  For a short thread
>>>> engagement this doesn't matter.  The UNF and ISO thread forms are
>>>> slightly different, but not enough to matter here.
>>>
>>>> Yours,
>>>> David
>>
>> --
>> David McNeely
>>
>
>
>
> --
> roger w
> From Proverbs:
> Under three things the earth trembles, under four it cannot bear up: a
> servant who becomes king ...
> ----------------------------------------------------------
> Explore printed work at: http://www.prliving.ca/
> View the growing list of video work at:
> http://revver.com/find/video/?query=LastonLastof&search_on=owners