Base Module Mounting Rail
Hardware Installation 3-9
Clip Nut Location
Two screws secure the module to the rack. Racks with square holes use a clip nut and a
10–32 X 5/8 screw. The base module spans 3Us, and the clip nut is installed in the
center hole of the lowest (third) rack unit (see Figure 3–9).
Figure 3–9 Clip Nut Location for the Base Module
Illustration Legend:
1-FirstU
2 - Second U
3 - Third U
4 - Clip Nut in the Second Hole of the Third U
Install the Clip Nut
To insert the clip nut:
1. Open the package containing clip nuts and remove one nut.
2. Locate the hole immediately below the front rail (second hole in the third U).
3. Seat one edge of the clip nut into the hole from the rear of the rack stile.
4. Compress the other edge of the clip nut and seat it in the hole.
Note: Clip nuts are only used in racks with square holes.
Note: Clip nuts are only used in racks with square holes. The
square nut is located on the inside of the rack stile.
Tip: Positioning the clip nut tabs horizontally and seating the edge
toward the outside of the stile enables better access to compress the
spring (see Figure 3–9, call out 4).