Anchor Bolt - A bolt embedded in concrete used to hold structural members in place. In residential construction 1/2"x6" or 8" anchor bolts are used to hold down the sill plate for floor joists or the bottom plate for walls.
There are many types of anchor bolts, most consist of a hexagonal head with a thread for the washer and bolt, some are straight and some have a bend (as in the picture below). As the anchor bolt is set into the concrete it makes it one of the strongest types of fastener. The use of the anchor bolt below is to secure the walls to it's foundation making it more resistant to earth quakes.
Below is a 3D image that shows Anchor Bolt. You can move the 3D object around with your mouse.
