Spotface vs Counterbore Holes in Machining: Differences and Uses

Counterbored holes are specified by giving the diameter of the drill, the diameter of the counterbore, and the depth of the counterbore

5 Callout Examples Fig 7 Counterbored and Countersunk Holes Page 9 9 Fig 9 Metric Notes for Counterbored,

counterbore slot callout Of course, if we decide to call out one counterbore hole only or call out the slot overall width, which in this case is 120 mm We

slot ถอนเข้า true wallet A counterbore is a circular hole with a flat bottom which coincides with another hole The counterbored section allows a bolt head or other