Beam Clamps with Shark tooth design to prevent slippage, For Flanges up to 1/2″, High-Quality Spring Steel Black Finish. Static Load up to 100 lbs, accepts 3/8-16, 1/4-20 or #10-24 threaded hardware, cUL Listed – 10 pc/Inner Box. Simply45 Beam clamps are great for hanging bridle rings and threaded rod from steel structural beams. The beam clamp accepts 3/8-16, 1/4-20 or #10-24 threaded hardware. Made of spring steel, with an adjustable jaw to fit on beam flanges up to ½ inch thick. Made with a black corrosion-resistant coating for years of worry-free service.