Quote:
Originally Posted by HOMEFLASH
Thanks.. They look more like drills to me. Hmm, not sure if they will harm the thread. but anyway, I may use it for last resource if nothing else works.
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No, they are tapered and the thread you see is a reverse thread which tightens into the broken nipple harder as you try to undo it....
They are the least likely method to damage any threads.
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