blind hole

A Blind Hole refers to a hole that is reamed, drilled, milled etc., to a specified depth. The etymology is that you cannot see through a Blind Hole. Other types of holes also include Through Holes, and clearance holes. In this instance Blind may also refer to any feature that is taken to a specific depth. More specifically referring to internally threaded holes (tapped holes), or externally threaded cylinders (in layman’s term a screw).
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