What term refers to a hole that does not go completely through the workpiece?

What term refers to a hole that does not go completely through the workpiece?

• A. Through Hole
• B. Counter Bore
• C. Blind Hole
• D. Taper

Answer: (C)

The main idea is whether a hole penetrates all the way through the material. A hole that does not go completely through is called a blind hole. It has a bottom surface and a defined depth, which is why you specify both diameter and depth. This is different from a through hole, which passes all the way from one face to the opposite face. A counterbore creates a recessed, flat-bottomed seat for a fastener head and is related to holes but serves a different purpose, and a taper refers to a conical angle in a hole, not a simple stopping hole. So the term that best fits a hole that doesn’t go completely through the workpiece is blind hole.

The main idea is whether a hole penetrates all the way through the material. A hole that does not go completely through is called a blind hole. It has a bottom surface and a defined depth, which is why you specify both diameter and depth. This is different from a through hole, which passes all the way from one face to the opposite face. A counterbore creates a recessed, flat-bottomed seat for a fastener head and is related to holes but serves a different purpose, and a taper refers to a conical angle in a hole, not a simple stopping hole. So the term that best fits a hole that doesn’t go completely through the workpiece is blind hole.