What is the name of this Allen-head furniture fastener?

Question

I have a couple of boards that are parts of a table I am assembling, and I wish to know the name of the metal piece of hardware circled in red, below. I would have thought it was called a bolt, but I cannot find anything like it under the name "bolts" at home depot.

EDIT:

Upon closer inspection, the hardware appears to be threaded inside for accepting a machine screw. This may help with identification, and I believe that one or two of the answers below may be already correct. I am reluctant to remove it from the hole because I do not want to risk stripping the wood in the hole.

Answer 1

While difficult to tell for sure I think it is an E-Z Lok threaded insert. It consists of a course threaded screw that is inserted into the wood. A pilot hole is drilled and the insert is screwed in with a Allen wrench until it is flush. The center of the insert is tapped for a machine screw. The advantage of this fastener is it can be disassembled numerous times with out stripping the wood.

Answer 2

It's a countersink style bolt or screw that comes with the ubiquitous Swedish "assemble-it-yourself" furniture and now some knock-off Ikea copycat furniture. If you look in the fastener section of your Big Box hardware store it will be with other fasteners labeled "furniture fasteners"; often sold in little packages, sometimes in the "specialty fastener" drawers.

Answer 3

Home Depot sells them as "threaded inserts" on their website and the folks who work at your local store should be able to point you in the right direction.

They're used to provide threads for a machine screw in wooden pieces so that they can be assembled/disassembled more easily. They tend to strip out in softwoods and particle boards quite easily if you're not rather gentle with them.

Answer 4

You're looking for Tapping Inserts for Softwood. They are available in different sizes so you'll need to determine the screw size.

Answer 5

The item looks like a grubscrew.