Depicting threads on drawings
When constructing parts with industry standard threads, you should use the Hole or Thread commands, not the Helical Protrusion or Helical Cutout commands.
Helical features require significantly more memory to construct and display in part documents, and take significantly longer to process in a drawing view. You should only use helical features where the actual shape of the helical feature is important to the design or manufacturing process, such as with springs and custom or unique threads.
Thread style
Most drawing views display both the minor and major thread diameter (except pictorial and isometric views, where only the minor thread diameter is displayed). You can set the thread depiction standard (for example, ANSI , ISO, ESKD) on the Drawing Standards page of the QY CAD Options dialog box. You can then save these settings in a template, and use the template to ensure that all your documents conform to the same standard.
Thread references
You can also place information like thread size and thread depth on a drawing with the Smart Dimension command and Callout command. Use the Thread Reference buttons on the Dimension Prefix dialog box or the Callout Properties dialog box to specify what information you want to add.
Threads in section views
In both section and paper-thin section drawing views, you can use the following check box to show the thread graphic when the cut is along the axis of a threaded hole:
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Show threads in Section Only section views
When the view is selected, this option is available on the Annotation page, Drawing View Properties dialog box. You also can set a default for this option in the assembly or sheet metal document on the Annotation page, QY CAD Options dialog box.
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