The bolts and nuts came with the wheels I got from GW. The nuts seem to be
15-18mm deep.

Velma 82 1.9L AAZ TD Westy
On Mar 13, 2014 1:54 PM, "Dick Wong" <sailingfc@dslextreme.com> wrote:

> I have no issue with exceptions to the rule.  I'm sure VW has done their
> homework.
>
> Other factors to consider when fastening parts with nuts and bolts: Cut or
> rolled threads, grade of the nut and bolt, thread pitch, material type.
>
> -Dick-
>
>
> On Thu, Mar 13, 2014 at 11:09 AM, mark drillock <mdrillock@cox.net> wrote:
>
> > Rule of thumb aside, on factory alloy wheels VW used nuts that didn't
> > even come close to meeting your "stud is flush or protruding" goal. A
> > mere 7+ threads was deemed sufficient by one of the worlds largest and
> > most successful car maker.
> >
> > Mark
> >
> >
> >
> > Dick Wong wrote:
> >
> >> General rule of thumb for bolt to nut engagement:  From a strength
> >> standpoint, the minimum length of thread engagement should be at least
> the
> >> diameter of the bolt.  For a 14mm x 1.5 lugnut/lugbolt, you should go
> for
> >> 14mm of engagement.  If you can't measure the available thread length,
> you
> >> can calculate the minimum number of turns needed by knowing the thread
> >> pitch.  In our case, the thread pitch is 1.5mm per thread.  The nominal
> >> bolt diameter is 14mm, therefore 14mm/1.5mm per thread = 9.3 threads.
>  And
> >> since there is one thread engagement for each turn, the minimum number
> of
> >> turns is 9.3 for the nut/bolt engagement.
> >>
> >> In the case of a lugbolt engaging into the brake drum, if the drum wall
> >> thickness is less than the bolt diameter, there is no further strength
> >> gain
> >> by going beyond the depth of the available threads.
> >>
> >> If nothing else for a nut on a stud, make sure the stud is flush or
> >> protruding from the top of the nut.
> >>
> >>
> >>
>