A - Mating Surface for Access Panel
In Feature A, the rectangular access hole on the
angled face is covered by a flat panel. That cover panel is secured by multiple bolts.
The mating surface for the cover panel has a
flatness requirement of +/- 10 mils.
That level of tolerance requires machining stock
on the mating surface.
100 mils of machine stock thickness is added
around the perimeter of the access hole
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