Thread Display on 2D Projections

By default, the thread-marking lines are automatically created on 2D projections of bodies with threads.

The line display is controlled via the projection parameters, the tab Lines.

Usually, the distance on drawing between the thin thread line and the thick line of the threaded face corresponds to the actual thread height multiplied by the scale of the projection. However, on projections with small scales these two lines may overlap each other. In order to avoid that, the Minimum Height option is enabled by default in projection's parameters. The option has the value 0.8 mm for ISO drawings and 0.025 in for ANSI drawings. In result, if a thread height multiplied by the scale of the projection is lower than 0.8 mm or 0.025 in, then the actual height gets ignored, and the thread line is drawn at 0.8 mm or 0.025 in distance from the thick line. This option can be disabled by disabling its checkbox or customized by changing the minimum height value. The checkbox and the value input box appear in the Lines tab of projection's parameters upon selecting Threads in the list of lines.

 

Sections of the threaded connections require setting of the Fill Element Outline flag in 2D Projection parameters. When flag is set, lines of the section view will be constructed correctly. Otherwise projection lines of bolts and holes will overlap each other due to interpenetration.

When dimensioning the thread lines, the thread notations are applied automatically. To cancel this mode (of creating a normal dimension), set parameter From lines to Auto. By default the value is set to From lines for dimensioning the thread lines.

Hidden threads can be displayed on 2D projections by dashed lines, when the Hidden lines flag is turned on. When creating a section or a local view, the thread is displayed in the usual way. In those cases, thread notations can be applied automatically when dimensioning thread lines.