GB/T 4459.5-1999
ActiveMechanical drawings--Representation of centre holes
机械制图 中心孔表示法
Application Summary AI generated
This standard specifies the methods for representing center holes in mechanical drawings, including their shape, dimensions, and positional symbols. It is applied in engineering design and manufacturing documentation across industries such as automotive, aerospace, and general machinery, ensuring consistent interpretation of center hole features for machining and inspection processes.
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