Blind hole

Hole types: blind (left), through (middle), interrupted (right).

A blind hole refers to a hole that is reamed, drilled, or milled to a specified depth without breaking through to the other side of the workpiece. The etymology is that it is not possible to 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 hole (tapped holes).

单词	Blind hole
释义	Blind hole 原声例句美丽新世界 All he deserved to live in was some filthy sty, some blind hole in the ground. 他是只配居住在肮脏的猪圈或是地下的黑洞中的。英语百科 Blind hole A blind hole refers to a hole that is reamed, drilled, or milled to a specified depth without breaking through to the other side of the workpiece. The etymology is that it is not possible to 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 hole (tapped holes).
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