Hanger bolts come in a variety of shapes, sizes, and materials, and are highly versatile and used in many applications. They come in several common designs and can also be available in semi-standard and even custom designs. Hanger bolts are headless bolts that feature one half with a lag screw thread and the other half with a machine screw threading and a blunt tip. They are typically used to hang materials from wooden structures. The lag screw portion of these bolts is typically inserted into a predrilled hole for most overhead applications. They are also ideal for assembly situations in which you want the strength and easy assembly of a bolted connection on a wooden joint, such as furniture legs.