Setup & drawing Hex Nuts (Mechanical Toolkit)

This Tech Tip demonstrates how the Mechanical Toolkit facilitates the drawing and annotation of some common mechanical components.

Note: please make sure that the drawing units are set to "mm" (millimetres) before using the mechanical toolkit functions.

Drawing Fasteners

Toolkit Menu › Mechanical... › Fasteners › Hex Nuts

The following dialog will appear:


  • Select the nut from the drop-down list, or fill in the relevant data.
  • Select which view you want to draw (side, top, or both).
  • Select the line type (solid or hidden) to use for the top and side views.
  • Press OK to draw the specified nut.

Using the Repeat function:
The repeat function is used to draw multiple equi-spaced copies of the nut.

To draw multiple copies of the nut in a straight line:
  • Select "Linear"
  • Enter the number of nuts you want to draw in the input box labelled "Number"
  • Enter the distance between the nut centres in the spacing input box below that
  • Click on the OK button.
To draw multiple copies of the nut in a circular arrangement:
  • Select "Polar"
  • Enter the number of nuts you want to draw in the input box labelled "Number"
  • Select either "Spacing" or "PCD" from the list box
  • If you selected "Spacing", then enter the distance between the nut centres
  • If you selected "PCD", enter the PCD of the circle on whose circumference the nuts will be arranged
  • Press OK to draw the specified nut.
Note that the side view will be disabled if you select the Repeat Polar function.

Adding and deleting nuts:
You may add your own nut definitions by clicking on the "Add" button, and then entering the relevant data. The nut definition will then be saved when you click on OK, or select another nut definition from the list.

Warning: If you modify an existing nut definition, you will be asked to save it. There are 3 options available: 'Save the Changes', Save the Changes as a New Definition', 'Leave the definition as it was'.

It is recommended that the original definition remains unchanged.

Drawing the side view:
If the "Side View" checkbox was checked then AllyCAD will prompt:

Enter position of nut for side view (Spacebar to stop)

Indicate the position of the centre of the nut's base.


Enter a point on the nut centre line (Spacebar to Stop)

Enter a point on the centre line to indicate the rotation of the nut.


Note: To draw the nut with no rotation, click on the same point when prompted for the nut's base and the nut's centre line.

Drawing the top view:
If the "Top View" checkbox was checked then AllyCAD will Prompt:

Enter nut centre for Plan view (spacebar to stop)

Indicate the position for the centre point of the nut plan.

AllyCAD will prompt:

Enter a point on the nut centre line (Spacebar to Stop)

Indicate a point on the centre line of the nut plan. This point will be used to rotate the nut plan drawing.


Note: To draw the nut with no rotation, click on the same point when prompted for the nut centre and the nut centre line.

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