Mechanical Drawing

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I have a mechanical drawing and has a dimension that has h8 suffix, what that is it mean???

Hi I need some help, I have a drawing that has a dimension 130 H8 mm, (hole). what that is it mean???? please help me.
I donot understand the h8 part

It's a ISO standard tolerance that changes with the hole size in question. H8 tolerances are listed in the chart on this web page.

http://www.engineersedge.com/iso_tolerance.htm

Hope this helps!

5TH PERIOD MECHANICAL DRAWING CLASS APRIL FOOLS JOKES.


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