"Jon Danniken" wrote in message
...
I'm thinking about using the red threadlocker (the "permanent" type) on a
fastener to avoid flashing off the zinc coating through welding.

An example of the application can be seen in this image:
http://i.imgur.com/YHH7P.jpg

In that image, the nut at the top is welded to the threaded rod, and its
purpose is to rotate the threaded up and down to extend/retract the
threaded rod against a heavy load (generally, a house structure)....

Jon

Two nuts tightened against each other should work well, as long as you
remember to turn the lower one for Up and the upper one for Down.

jsw