I'm trying to follow a tutorial in youtube but i don't have a bolt mesh . What should i do? The tutorial is in this link: tutorial

In minute 9:46 he is adding a bolt: Add > Mesh > Bolt
But i don't have any bolt mesh in the menu or sub menus of Add > Mesh

I saw someone else added comment about it but not one gave him answer.
Enable the Add-on "Bolt Factory" in the user preferences.