This wood beam hanger only uses one bolt. It has teeth on top of the hanger to prevent it from turning after installation. It is a very strong hanger and can be used for both commercial and residential use. It has an "oil lite" bronze bearing and axle bolt with lock tight nut. It accepts a 12mm bolt. Holds up to 5000 lbs.
Hangers should be spaced 2 ft from the end of the set and 2 ft a part for each swing. Unscrew bolt holding pendulum bushing in place. Take pendulum out. Put bolt, ½" carriage bolt, not included, (length depending on thickness of wood) up through the top of the swing hanger and up through wood. Screw nut (not included) down snuggly on bolt. Put pendulum back in center of swing hanger and bolt back through pendulum and attach lock-tite nut. Grease or oil bushings if squeaking noises are heard. You will need to use S-hooks or shackles from the chain to the swing hangers. Make sure the S-hooks are closed to within .04 to meet ASTM safety standards. To do this you will need to use our S-hook pliers or a regular pair of channel lock pliers. WARNING: Once the S-hooks have been opened they will have to be replaced to avoid injuries from coming open and/or breaking. Make sure that if you are using shackles they are also tightened.