In article , Kelly Jones says...

Yep - SS on SS is bad. What happens is you get intramolecular welding
between the two parts.

If you look closely under a microscope at a siezes part like that,
you see that the material welds up, then tears free as it begins
to try to slide - with the result being tiny 'snowballs' of metal
that grow larger as the sliding continues. Eventually the rolled
up metal is large enough to cam up inside the thread clearance,
and the fastener jams.

This is one reason why, if you suspect a fastener is just
beginning to sieze up as you loosen it, you should immediately
snug it back down and try to get some penetrating oil into
it by capilary action. Soak it, tighten, loosen in repetitive
cycles.

At some point there will be enough oil in there to prevent the
continued weld-up of additional metal to the ball that is
trying to grow in there.

Jim


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