To Create a Centerline Cross With a Hole (AutoCAD Mechanical Toolset)

Click Home tabDraw panelCenterline drop-downCenterline Cross with Hole. Find
Press ENTER to display the Select Options for Centerlines dialog box, or specify a starting point for the centerline .
Specify the center point of a hole.
Specify a diameter value for the hole to create a cross with hole. You can enter several values for the diameter separated by the | sign (for example, 1.5|2.5|4|6|12).
Press ENTER.
Specify another location to insert further centerline crosses with holes.

Note:

Select No Hole to create a centerline cross without hole, and then specify a diameter value for the cross.