Beam Clamp 8 Standard Duty Max. Load (Lb.) 1000 Material of Construction Carbon Steel Width (In.) 8 Bolt Size (In.) 3/8 Clamp Center Load On Beam To Prevent Distortion. Standards A-A-1192A (Type 21) WW-H-171-E (Type 21) ANSI/MSS SP-69 and MSS SP-58 (Type 21). UL Listed when used with 3/8 in and 1/2 in rod. Package Quantity 1