clevis hanger pipe clamp Material: Steel with zinc plated Heavy Duty type Size: 1/2" to 24" clevis hanger pipe clamp Material: Steel with zinc platedHeavy Duty type Size: 1/2" to 24"plain, zinc plated, copper plated, hot dip galvanized, black phosphate coated, epoxy coatedbox and palletized.UL/FM Approved (2-1/2" to 24") Meets MSS SP-58 & FS WW-H-171 Heavy Duty Clevis Hanger