If I decide to use anti-seize on a bolt, I go through a few extra steps
before I put the anti-seize on the bolt. First, I torque the bolt down
dry, and note the relative position of the bolt head. Then I remove the
bolt, put the anti-seize on it, then tighten it back down until the bolt
head is in the same position that it was before applying the anti-seize.
My old Volvo 260 series manual was strange and used a pointer on the
torque wrench, as well as a protractor to tighten a lot of its engine
bolts. First you torqued the bolts to a minimal torque, say, 10 Ft/Lbs, (I
don't remember what the manual called for, so the 10 Ft/Lbs is for theory
only). Next set the pointer to zero on the protractor, then turned the
bolt the given number of degrees. Sounded strange, but it did the job. The
Volvo 260 was a poor engine to begin with, I'm glad I replaced it with a
240 engine!
Peace,
Pat
- Support Habitat for Humanity, A "hand up", not a "hand out" -
Pat Horne, Network Manager, Shop Supervisor/Future planner, CS Dept,
University of Texas, 1 University Station C0500,Austin, Tx. 78712-1188 USA
voice (512)471-9730, fax (512)471-8885, horne@cs.utexas.edu
On Tue, 10 Sep 2002, Gary McCormick wrote:
> A good all-around anti-sieze is the MIL-PRF-83483 material. This stuff is
>just
> molybdenum disulfide in petrolatum (vaseline, essentially), but for non
>high-temperature
> applications (don't use it in exhaust manifold studs, for example) it works
>great. It is
> available at just about any auto parts place. The thing to watch out for when
>using
> anti-sieze on a threaded fastener is the increased axial load on the
>lubricated fastener
> which will result from the same torque. With less of the torque input taken
>up in
> friction, the same torque will yield a higher tensile load - i.e., the bolt
>will be
> tighter. This is VERY important if the threads are in a softer material such
>as aluminum -
> and don't ask me how I know this.... ;^).
>
> Gary McCormick
> San Jose, CA
>
> Tim Waltz wrote:
>
> > What do you recommend for anti-seize?? I've read that different people use
> > it on bolts, etc, but any certain kind for different applications?
> >
> > My immediate need is for a trailer hitch ball. The last one I put on froze
> > to itself (no rust). The only familiarity I have with anti-seize is Ti-prep
> > for bolts going into titanium bike frames.
> >
> > Tim
> >
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