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DIN tolerances


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quote:

I have a print callout of dia. 67 H7

Dia. 18 h7

and Dia. 8H3


Try page #661 in Machinery's Handbook (25TH Edition)

H7 = Hole Basis (Sliding fit not intended to turn freely, but to move and turn freely and locate acurately)

 

h7 = Shaft Basis (Close running fit for running on accurate machines and for accurate location at moderate sppeds and journal pressures)

 

Sorry but I don't see anything for H3

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