Internal threads are cut with which tool?

Internal threads are cut with which tool?

• A. Lathe
• B. Saw
• C. Die
• D. Tap

Answer: (D)

Internal threads are created with a tap. A tap is a cutting tool designed to form the inside surface of a hole by removing material as you turn it, producing the helical thread profile inside the hole. The other tools don’t create internal threads: a die cuts external threads on rods, a saw isn’t used for threading, and a lathe typically cuts threads on a workpiece but the standard way to make internal threads in a drilled hole is tapping with a tap (hand tapping with a tap wrench or machine tapping). When tapping, you drill the hole to the correct tap drill size, apply cutting oil, and gradually advance the tap to the full depth.

Internal threads are created with a tap. A tap is a cutting tool designed to form the inside surface of a hole by removing material as you turn it, producing the helical thread profile inside the hole. The other tools don’t create internal threads: a die cuts external threads on rods, a saw isn’t used for threading, and a lathe typically cuts threads on a workpiece but the standard way to make internal threads in a drilled hole is tapping with a tap (hand tapping with a tap wrench or machine tapping). When tapping, you drill the hole to the correct tap drill size, apply cutting oil, and gradually advance the tap to the full depth.