I am struggling to make a thread. Basically  I need to 3D print C-mount and I need to make threads so it fits the existing parts.

The thread is nominally 1.000 inch (25.4 mm) in diameter, with 32 threads per inch, designated as "1-32 UN 2A" in the ANSI B1.1 standard for unified screw threads. All is need is details of the slicing profile or even better CAD model. Can anyone can help?

Thanks