Right-click the circular face and select Other
Selection... to select the hole axis.

Use the Ctrl button to select the face as shown:

Click Constraint Defined in Dialog Box
.
The Constraint Definition dialog box appears.

The application detects three possible
constraints between the axis and the face:
The other constraints are grayed
out indicating that they cannot be set for the elements you
have selected.
Select Distance.
Click OK to confirm.
The distance constraint is created.
