It's a Sheraton bolt.

http://www.woodcraft.com/family.aspx?FamilyID=1096

It's very strong, and easily tightened - after the bed is together.

Lee Valley has bed bolts
http://www.leevalley.com/hardware/pa...=3,40842,41269

These are similar to the Sheraton bolt. Perhaps easier to install.

The Sheraton requires you to mortise in the square bolt, while the Lee
Valley just requires a hole.




If you are going with the Stickley-Mission look (like I think you are) than
the sheraton style decorative bolt cover will not fit the style (IMHO).

I have done two beds with these
(http://www.woodcraft.com/family.aspx?FamilyID=3269) and have had no
problems. Easy to inlay and easy to attach.

Good luck.

--
Stoutman
www.garagewoodworks.com