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Join Date: Apr 2014
Posts: 6

Pitch

04/18/2014 2:45 AM

What is the diffrence between un and unc?

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Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
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#1

Re: pitch

04/18/2014 3:29 AM

UN is undefined; it could be coarse, fine, extra fine, or special. UNC is Unified National Coarse threads.

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