Beam Clamp Beam Clamp Type C-Clamp Beam Mount Location Top Clamp Length 0.75 in Clamp Material Stainless Steel Clamp Material Grade 305 Clamp Width 0.88 in For Beam Shape/Type C-Purlin H-Beam I-Beam For Threaded Rod Size 1/2 in Load Capacity 1 130 lb Series 305 Standards cUL Listed ANSI/MSS-SP-58 Type 19 UL Listed WW-H-171 Type 23