Hello every one . This is my first post here on practical machinist . I'm a cnc programmer at the age of 26 so some experience but not a whole lot . one of the things that I have never really done is thread milling . I have the capability of doing it with my bobcad package . its easy if the the thread is one that's in the CAM library how ever there is a thread I have to do 1"-20 UNEF , its not in the library and I'm wondering what resource I can reference for the fields circled in red . or what page of the machinists hand book do reference to figure it out with math's . I appreciate any and all responses.