Minerallac® Minerallac Traditional® Beam Clamp, 3/4 in Flange Thickness, 3/4 in Flange Width, 275 lb, 1/4-20 Bolt, For Use With: 3/8 to 1/2 in Drop Rod, Conduit Hanger and Bridle Ring, Silver Color, #10-24 Tapped Holes Bottom and Back of Beam Clamp, 40 N-m Torque Rating, Malleable Iron, Zinc Plated, 1.2 in L x 1.38 in W x 1.45 in H