Channel beam U-bolt clamps can be used to secure channel to either the underside of the beam or the inside of the beam, depending on the configuration of the clamp. They're designed with a piece of bent plate and a U-bolt that's threaded on both sides to secure strut channel in place. The channel is fed through the U-bolt, which is then tightened to secure both the plate to the beam and the channel to the plate.

Channel beam thru clamps secure strut channel to beams using a “window” cut out of a bent plate and a set screw. A pair of these clamps are placed on both sides of a beam and a channel is fed through the windows. Once in place, clamp is secured to the beam with a set screw, which also holds the channel in place.

Flange beam clamps support strut channel from both sides of a beam. They position inside the channel and secure it to the beam with set screws.

Channel beam C-clamps secure channel to beams by clamping down on the flanges of a beam with a set screw. The channel is sandwiched between the flange and the clamp.