Question: what is the difference between m5 and m6 cage nuts?
Answer: Cage nuts come in many sizes but M5 and M6 cage nuts are mainly used in IT environments. M6 is a heavier, more robust cage nut that M5. Let's take a look at mounting a Cage Nut on a rail in the StarTech.com 4POSTRACK25U. In some situations, you may be advised to use a slot screwdriver to help install cage nuts.