Hanger bolts are extremely useful fasteners for many commercial and consumer applications. Hanger bolts are essentially cylindrical metal fasteners that are threaded on both ends, often tapered at one end, and designed to connect two surfaces while hiding the fastener.
Hanger bolts can be typically found in applications requiring an object to be suspended or attached to wood. Similar to a common stud, hanger bolts are headless bolts with lag threads on one end to screw into wood and machine screw threads at the other end to either be threaded into a tapped (internally-threaded) hole or accept a nut.
Furniture manufacturers use hanger bolts with corner brackets, clinch nut plates, tee nuts and wherever wood and machine screw threads are required in a single fastener. Building contractors, electricians, and utility installers use hanger bolts for suspending electrical conduits, fixtures, sheet metal, and junction/pull boxes. These kinds of uses often require additional coupling nuts and threaded rods to be used with the hanger bolts.
Because hanger bolts are headless, they require a specific driver tool to install them. If you don’t have access to a driver, there are a couple of tricks you can use to install hanger bolts:
- Tighten two nuts together on the hanger bolt and drive the outer nut.
- Drive smaller hanger bolts using a solid metal cap (acorn) nut.
- Plain-center hanger bolts can be driven using locking pliers – pliers can even be used on fully-threaded hanger bolts so long as they can grip in an area that won’t be used because the pliers will obviously damage the threads.
Steel is a common material used to manufacture hanger bolts, in both a plain finish (which can rust) and with zinc plating. Regardless of the type of hanger bolt, full-depth pilot holes need to be drilled to ensure maximum withdrawal resistance.
To learn more about hanger bolts, contact the hanger bolt experts here at Electronic Fasteners. We carry a wide range of hanger bolts.