Steel, 5/16 in to 1/2 in, Hammer-On Beam Clamp - 2KWY5|4H58 - Grainger
Conduit Hanger with Beam Clamp;pipe Support Bracket Clamp;Cable Clamp for Pipe;Cable Hangers for Wire;Used for Cable Pipe Clamps for Pipes Installed on The Edge of I-beam(8Pcs) (1-1/4" 32mm) - Amazon.com
610 Beam Clamp: Connects to I Beam | Star Hanger Systems
Britclips HFL2-M10 Heavy Duty Beam Clamp for 10mm Threaded Rod (Sold in 1's) (6003010) | CEF
Steel, 1/8 in to 1/4 in, MC/AC Cable Beam & T-Grid Clip - 2KWW2|MAC224 - Grainger