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Date:         Thu, 17 Jun 2010 13:43:31 -0700
Reply-To:     Roger Whittaker <rogerwhitt1@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Roger Whittaker <rogerwhitt1@GMAIL.COM>
Subject:      Re: seat belt replacement, tough anchor bolts
Comments: To: mcneely4@cox.net
In-Reply-To:  <20100617163023.DQZXR.776405.imail@eastrmwml35>
Content-Type: text/plain; charset=ISO-8859-1

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 ... 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


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