Item Specifications UPC 842176186481 Package Quantity 25 Size 5/16" x 4" Head Style Hex Head Height 7/32" Drive Style External Hex Drive Size 1/2" Inch / Metric Inch Thread Size 5/16" Thread Dia. 0.3125" Coarse / Fine Coarse Length 4" Thread Length Dec. 3.25" Material Steel Material Type Hot Dip Galvanized Steel Finish Hot Dip Galvanized Specification 1 ASME B18.2.1 Item Type Bolts Product Code 5150-14455 SKU 3GBL9050400