What command in NX can you use to create a helical curve with a specific number of turns, pitch, diameter, and turn direction?

The command used to create a helical curve with specific parameters such as the number of turns, pitch, diameter, and direction of the turns is the Helix command. This tool is specifically designed to produce a 3D helical geometry that follows the defined parameters, making it ideal for applications like springs, threads, and other helical structures.

By using the Helix command, you can directly input the characteristics of the helix you want to create. The command allows for precise control over the dimensions and orientation of the helix, ensuring that it meets the design requirements.

Other commands such as Spiral do not provide the same level of customization for helical properties. While Tube can create tubular shapes, it does not generate helical curves in the way required. Similarly, Law Curve is used for more complex curves based on mathematical functions but does not specifically cater to helix creation with the desired parameters. Therefore, the Helix command is the most appropriate choice for this task.