about harm of oil on thread (especially aluminum)

[Douglas Frank]

Konstantine Bogach wrote:
>
> Later I found oil in the thread in
> abundance.  Apparently,  deformation in material goes easier with
> lubricant and the thread is stripped before reaching spec torque.  Does
> anybody had such experience?
> Is it well known to everyone except me?

Yes.  :-)

I think the thumb rule is, lubricated threads should be torqued to 60% of the
clean-dry-threads spec.  Anyway, that's the way I've been torqueing on my anti
seize-coated lug bolts, and no failures so far.

--
Douglas Frank    Compaq Computer Corp.
ZKO              110 Spit Brook Rd.       The older I get,
603-884-0501     Nashua, NH USA 03062       the better I was.