Holes that are only drilled partially through a workpiece are called ____.
A) blind holes
B) pilot holes
C) thru holes
D) feed holes

Question

Quizplus · Accepted Answer

Blind holes are drilled only partially through a workpiece, meaning they do not go all the way through. Pilot holes are a type of hole that is drilled to guide a drill bit into the workpiece, and are typically drilled all the way through. Thru holes are holes that are drilled completely through a workpiece, from one end to the other. Feed holes are not a commonly used term in drilling terminology.

Holes That Are Only Drilled Partially Through a Workpiece Are