Installing Threaded Rails; Installing Cage Nuts; Using The Cage-Nut-Insertion Tool - Lenovo 42U 1200 mm Deep Dynamic Rack Installation Manual

Installing threaded rails

You must install devices that have threaded holes or device rails that have threaded holes on the rail-
mounting flange on the inside of the rack-mounting flanges. See the device documentation for detailed
information about how to use threaded rails.

Installing cage nuts

You must use cage nuts for all optional devices that do not have threaded holes. The rack comes with a
supply of cage nuts, and devices that require them come with cage nuts. Cage nuts are installed on the
inside of the rack-mounting flanges with either the cage-nut-insertion tool or a flat-blade screwdriver. The
cage-nut-insertion tool comes with the rack and some optional devices.

Using the cage-nut-insertion tool

Complete the following steps to install a cage nut with the cage-nut-insertion tool.
Cage nut
Cage-nut-insertion tool
Rack mounting
flange
Figure 17. Installing cage nuts with the cage-nut-insertion tool
1. Determine the hole in which you want to install the cage nut.
2. From the inside of the rack mounting flange, insert one edge of the cage nut into the hole.
3. Push the tool through the hole and hook the other edge of the cage nut.
4. Pull the tool and the cage nut back through the hole to complete the installation of the cage
nut.
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