apartment therapy changing the world, one room at a time

The bottom left photo shows a piece of hardware. What's it called, and what's it for? Looks like something you'd use to hang a floating shelf?

They're from the article on how to build your own headboard. As you'll read, Maxwell didn't know what they were called.

They're called "extra-thin flush mounts." http://www.rockler.com/product.cfm?page=344