Malleable iron beam clamps with 7/8in jaw opening and 10-24 threaded holes are used with conduit hangers, bridle rings and drop 10-24 rods. They are tapped for rods on the bottoms and backs. Garvin Industries' heavy duty beam clamps are used to hang medium, light, or heavy loads from structural beams. Their hardened cup point screw and malleable iron body will not distort or slip off beam edge when tightened.