A tap is used for cutting which type of threads?

A tap is used for cutting which type of threads?

• A. Internal threads
• B. External threads
• C. Undercut threads
• D. Knurled threads

Answer: (A)

When you want to create threads inside a hole, you use a tap. A tap cuts internal (female) threads, meaning it creates the threads on the inside surface of a bore so a mating bolt or screw with external threads can fit into it. The tool that cuts external (male) threads on the outside of a rod is a die, not a tap. The other terms aren’t standard thread-cutting types—undercut threads aren’t a typical category, and knurled refers to a grip texture, not the threading itself. So internal threads are what a tap is used to cut.

When you want to create threads inside a hole, you use a tap. A tap cuts internal (female) threads, meaning it creates the threads on the inside surface of a bore so a mating bolt or screw with external threads can fit into it. The tool that cuts external (male) threads on the outside of a rod is a die, not a tap. The other terms aren’t standard thread-cutting types—undercut threads aren’t a typical category, and knurled refers to a grip texture, not the threading itself. So internal threads are what a tap is used to cut.