Spotface vs Counterbore Holes in Machining: Differences and Uses

Counterbore Holes: A Brief Guide counterbore slot callout In this article, we'll define counterbore holes, explain when to use a counterbore, and describe how to call out a counterbore hole in your counterbore slot Counterbore Symbol

slot dragon 88 Use this chart to find out what size counterbore hole to use for your ANSI Inch socket cap head screws and bolts