Here's some info about that........

http://www.zerofast.com/torque.htm

Mike B.

----- Original Message -----
From: "Dennis Haynes" <d23haynes57@HOTMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, December 19, 2007 11:07 AM
Subject: Re: nuts in steering linkage and rack

> Unless specifically designed for the purpose such as a Grade C prevailing
> Torque locknut, nuts should never be reused in a critcal application. Most
> of the preload is taken on the first three threads and they will always
> deform when properly torqued. Given the same torque, used nuts will not
> provide the same or consistant tension. High end fastner suppliers can
> demo
> this with a bolt tension gauge. When repalcing, you also need to get the
> proper grade or property class fastners and the bolts, nuts, washers, need
> to be match or at least suitable. For anything that maters you want at
> least
> P.C. 10.9 including heat treated washers. Grade C locknuts are lubricated
> and while difficult to run down a bolt, reqiure less final torque to
> achive
> the final clamping load as a standard dry nut.
>
> Dennis
>
>
>>From: Allan Streib <streib@CS.INDIANA.EDU>
>>Reply-To: Allan Streib <streib@CS.INDIANA.EDU>
>>To: vanagon@GERRY.VANAGON.COM
>>Subject: Re: nuts in steering linkage and rack
>>Date: Wed, 19 Dec 2007 10:03:15 -0500
>>
>>The illustration in the Bentley manual specifically indicates the
>>nuts, not the bolts, with the "always replace" admonishment.
>>
>>I looked again and noticed an astersik with a footnote, and it says
>>"self locking nuts".  I wonder if these are just nuts pre-treated with
>>thread locker.  I looked at the ones I removed and they do not seem to
>>have any "deforming" features that would preclude re-use, in fact they
>>look completely ordinary.
>>
>>Allan
>>
>>Scott Daniel - Shazam <scottdaniel@TURBOVANS.COM> writes:
>>
>> > I don't know about your VW  stealership but mine would have a hard time
>> > finding those bolts in the parts pictures and ordering them.  NLA
>>wouldn't
>> > surprise me even.  I don't think they are stretch type, but I'm not
>>certain.
>> >
>> >   Liability and safety would be the obvious concerns.
>> > 'modern' ?? you're calling a 1980 to 1991 Vanagon 'modern' ??
>