Specification Brand : RAW PRODUCTS CORP BulletPoint1 : Hot dipped galvanized carriage bolts have a domed or countersunk head, and the shank is topped by a short square section under the head. BulletPoint2 : The square section grips into the part being fixed (typically wood), preventing the bolt from turning when the nut is tightened. BulletPoint3 : The square shank of the bolt allows it to lock into place when inserted into a round hole in wood or a square hole in a metal strap, the unthreaded square shank pulls into the wood creating a tight connection. BulletPoint4 : Carriage Bolts under 6 inches are fully threaded. Sizes over 6 inches in length have a shoulder. BulletPoint5 : Hot Dipped Galvanized assemblies should be used exclusively. If you use a HDG bolt you must also use a HDG nut. Color : Silver Configuration : configuration CustomerPackageType : 1 ExteriorFinish : Galvanized ExternallyAssignedProductIdentifier1 : 730656639346 ExternallyAssignedProductIdentifier2 : 0730656639346 ExternallyAssignedProductIdentifier3 : 00008236133721 GradeRating : Grade A ItemDisplayWeight : 7.9 pounds ItemName : Carriage Bolt Hot Dipped Galvanized - 1/4"-20 x 2-1/2" FT - Qty-100 ItemPackageDimensions_Height : 18.4 centimeters ItemPackageDimensions_Length : 8.9 centimeters ItemPackageDimensions_Width : 11.6 centimeters ItemPackageQuantity : 1 ItemShape : Shape ItemTypeKeyword : carriage-bolts Manufacturer : RAW PRODUCTS CORP ManufacturerGrade : Grade A Material : Alloy Steel MetalType1 : Alloy Steel MetalType2 : Zinc ModelNumber : 812575 NumberOfItems : 100 NumberOfPieces : 100 PackageLevel : unit PartNumber : 730656639346 ProductDescription : Carriage Bolt Hot Dipped Galvanized - 1/4"-20 x 2-1/2" FT - Qty-100 ProductSiteLaunchDate : 2016-01-23T21:41:58.380Z Scent : scent Size : 1/4"-20 x 2-1/2" Size1 : 0.5 inches Size2 : 6 inches Style : Carriage Bolt SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 31161600