Beam Clamp For 1/2 in Rod Size Rod Size 1/2 in Max Load (Lb.) Top of Beam 950 and Bottom 760 Material of Construction Electro-Galvanized Steel Length (in) 3/4 Width (in) 1-1/8 Thread Size (in) 1/2 Metal Detectable Yes For Structural Attachment To Top Or Bottom Of Metal Beams Purlins Channel Or Angle Iron Standards UL Listed and FM Approved Conforms with Federal Specification WW-H-171 (Type 23) ANSI/MSS-SP-58 (Type 19 23)