Which tool is specifically used for creating male threads on a pipe?

The tool that is specifically designated for creating male threads on a pipe is the die. A die is a specialized tool that has internal threads cut into its surface, allowing it to be placed over the cylindrical surface of a pipe or rod to cut external threads. When the die is turned, it precisely removes material from the pipe's surface and forms a uniform thread, creating a male thread that is compatible with female-threaded fittings.

In contrast, taps are used for cutting internal threads in materials, and while they serve a similar purpose for threads, they are not suitable for external threads like those on a pipe. A lathe is a machine that can be used to create various shapes and features, including threads, but it requires more complex setups and machining skills. A thread cutter, while it may also refer to tools capable of cutting threads, is not specifically identified for the purpose of creating male threads on pipes, thus making the die the most accurate choice for this task.