Cisco Nexus 7000 Series Hardware Installation And Reference Manual page 110

Attaching the Bottom-Support Rails
Make sure that the two bottom-support rails are level with one another. If they are not level, adjust the higher
Note
rail down to the level of the lower rail.
Figure 48: Positioning the Bottom-Support Rails
1 For the first and heaviest chassis installed in a rack, position
two bottom-support rails at the lowest RU on the rack.
Step 2 Use a Phillips torque screwdriver to screw in at least three (four if possible) M6 x 19 mm or 12-24 x 3/4 inch Phillips
screws on each end of each rail (using a total of 16 screws for both brackets) as shown in
Bottom-Support Rail to a Rack, on page
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
98
2 Allow at least 43.75 inches (111.1 cm) (25 RU) for
each Cisco Nexus 7018 system.
99. Tighten each screw to a maximum of 40 in-lb [4.5 N·m]) of torque.
Installing a Cisco Nexus 7018 Chassis
Figure 49: Attaching a