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Can a feature of size without any geometric tolerance have an IB or OB?

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Automotive
Joined
Sep 20, 2013
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CA
Hi all,

I am wondering, from simply a definition point of view, whether a feature of size without any geometric tolerance applied to it can have an IB (inner boundary) or OB (outer boundary), based on ASME Y14.5-2009?

Thank you.
 
Certainly. That IB or OB would simply be the max or min size as allowed by the given size tolerance. (This assumes that it's a rigid part, not a commercial stock size, etc.)
 
To clarify -- I should have said the MMC, which is of course the max or min size, as appropriate.

This chart might help. The asterisk is just a reference to Rule #1.

IB_OB_ejknbx.png
 

Belanger,

Thank you. I thought so, too. But I was not sure.
 
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