Overview Reviews Product Description Thomas and Betts 502 Beam Clamps Diameter: 1 Inch Galvanized Malleable Iron Universal Tapped 3/8 Inch - 16. Product Videos Custom Field Size 1 Product Reviews Write a Review Write a Review × Thomas and Betts 502 Beam Clamps Diameter: 1 Inch Galvanized Malleable Iron Universal Tapped 3/8 Inch - 16 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *