Item Specifications UPC 842176171951 Package Quantity 1 Size 5/8"-11 x 18" Head Style Round Head Diameter 1.344" Head Height 0.344" Inch / Metric Inch Thread Size 5/8"-11 Thread Dia. 0.625" Thread Class Class 2A Coarse / Fine Coarse Threads Per Inch (TPI) 11 Thread Coverage Partial Thread Length 18" Thread Length Dec. 6" Material Steel Material Type Hot Dip Galvanized Steel Grade Grade 307A Finish Hot Dip Galvanized Specification 1 ASTM : A307 Specification 2 ASTM : A153 Specification 3 ASME : B18.5 Tensile Strength 60,000 PSI Core Hardness Rockwell B69 Item Type Bolts Product Code 5150-6570 SKU 3GBC910C1800