A(n) ____ hole is one that has been machined to a larger diameter for a specified depth so that a bolt or pin will fit into this recessed hole.
A) countersunk
B) extension
C) chamfered
D) counterbored

Question

Quizplus · Accepted Answer

The definition best describes a counterbored hole, where the hole is enlarged at the top for a specific depth to allow a bolt or pin to be recessed within it. A countersunk hole is made at an angle to allow the head of a screw or bolt to sit flush with the surface, whereas an extension hole is used to extend an existing hole. A chamfered hole is one where the top edge is beveled or rounded.

A(n) ____ Hole Is One That Has Been Machined to a Larger