Use a wicking type of threadlock material (one that penetrates assembled 
threads) after all extended temperature processes ( soldering, ESS).  There 
are different types of wicking threadlock that can be loosened or not 
depending on your application. There are multiple vendors of this material, 
so don't lock yourself into Loctitie. There should be minimal loosening of 
the assy during processing, so I wouldn't worry about that.
 ----------
From: TechNet-request
To: technet
Subject: assy - loctite hardware on pcb assemblies
Date: Saturday, May 31, 1997 7:29AM

When a customer / drawing  requires threadlock "loctite" on hardware
at the pcb level, what step in the manufacturing processes does it
get applied ?

If prior to wave solder, what steps are taken to ensure it does not
break down ? example "loctite 242" breaks down at 300F.

Do you have a problem with small hardware becoming loose during the
assembly processes?

What material "threadlock" do you use in your facility?

Where is it installed ?

Do you re-apply after wavesolder / clean?

If you re-apply, do you completely clean off old material ?


Thanks for any feedback in advance;

Wesley Samples
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