Drilling Operations | Tapping October 21, 2009 By admin Tapping: Tapping is the operation for making internal threads in a hole by means of a tool called tap. The tap is essentially a bolt with threads cut on it. Last Updated: Wednesday, October 21, 2009 Related Related posts: Drilling Operations | Drilling Drilling Operations | Spot facing Drilling Operations | Reaming Drilling Operations | Counter boring Drilling Operations | Counter sinking Leave a Reply Click here to cancel reply. Name (required) Email (will not be published) (required) Website Comment