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June 1999

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Subject:
From:
Kathy Stillings <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 15 Jun 1999 14:46:07 -0400
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#10-32 UNF-2B thru means National fine series thread as said and the 10-32 is
the diameter and thread count per inch.  The Class 2B is the allowances and
tolerances for obtaining the fit.  This is a very detailed process of pitch
diameter, major and minor diameter, root radius, etc...  All in all summed up
Class 2 specifications do vary from a fit with no play when the pitch diameters
of mating parts are common to a fit with some play.  Class 2 is the Cadillac of
commercial screws.  If you need more detailed information like how to inspect
for class 2 please EMail me.

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