Very good question.  

In my experience, the corrosion issue with 
regard to masked off areas has never been 
a factor.  Yes, it will corrode, but the teeth 
will cut through that.  The masking off of 
areas has also been internal to the product. 
Yes, I've also used the star washers on painted 
areas (non-conductive paint at that) without 
a problem, but my *preference* is masked 
off areas. 

If you're subjecting your product to some 
extremes in environment other than normal 
office environment, then corrosion will most 
definitely be a concern. 

If you're going to use star washers on surfaces 
painted with non-conductive paint, then you 
may want to consider using a torque wrench 
for securing the nuts or bolts during assembly. 

Regards, Doug McKean 



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