Define: Cagenut?

cagenutOne of the biggest questions we get is “What is a Cage Nut?” Allow me to help out with this issue.

A Cage Nut is used on a rack that has square mounting holes. You would use a cage nut when you need to mount a product in your rack that requires a threaded hole. A cage nut is nothing more than a square nut that has threaded holes wrapped in a piece of spring steel designed like a cage. This spring steel has two flanges that when pressed together allow the cage nut to be inserted into the square hole and simply clip in. When this done you now have a square hole that is threaded. The nut is typically loose in the cage to allow for adjustments when installing the screw.

There are 3 common sizes for cage nuts. These sizes are 10-32, 12-24 and M6. The size you would need would depend on what is required by the product you are mounting. I always recommend purchasing the corresponding screw to go with the cage nut. This always make the installation easier if you happen to choose the wrong size cage nut.

Cage nuts will tear up your fingers trying to install or uninstall them with your bare hands. Consider using a Cage Nut Tool.

2 Responses to “Define: Cagenut?”

  1. Sysadmin Says:

    Cage nuts are an abomination against man and machine.

  2. Aaron Says:

    Cage nuts are awesome as they prevent wear and tear against threads that would otherwise be part of the rack itself. Mis-threads are going to happen, and if you are installing/uninstalling equipment on a regular basis you might essentially “lock yourself out” of certain rack elevations otherwise.

    They can be a pain in the ass to get in and out however. A trick is to note the two spring clips, normally one has a longer tip than the other. The longer tip should be installed first. So if you are installing cage nuts on the right side of the cabinet, put the longer clip towards the right. That way when you install the nut, you only have to hook the shorter end, which is easier.

    Also, install them with the clips on the left and right side, instead of on the top and bottom.