99.9% pure electrolytic copper coating Molecular bond to nickel-sealed high strength steel core Rods have a high carbon steel core and tip that provide superior strength when driving Copper coating will not crack when bent or tear when driven Minimum copper coating of 10 mils on rods listed to UL« 467 ERICO name length diameter and part number is roll-stamped within 12 (304 8 mm) of chamfered end UL logo and control number where applicable stamped on each rod for easy inspection after installation. Specifications: Part Number 613840 Material Copper-Bonded Steel Tensile Strength 80 000 psi Min Ground Rod Diameter Nominal 3/8 Ground Rod Diameter Actual (?) 0.358 Length (L) 4′ Plating Thickness 10 mil Unit Weight 1.3 lb
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