Specification Brand : RAW PRODUCTS CORP BulletPoint1 : A carriage bolt has a domed or countersunk head and the shank is topped by a short square section under the head of the bolt. BulletPoint2 : The square section grips into the part being fixed, preventing the bolt from turning when the nut is tightened. BulletPoint3 : Carriage bolts are often used to fasten wood panels or board to masonry or to one another. BulletPoint4 : 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. BulletPoint5 : Bolts Over 6" in length will have a shoulder beneath the head. Color : Silver ExteriorFinish : Zinc ExternallyAssignedProductIdentifier : 5055745021495 ExternallyAssignedProductIdentifier1 : 722703771840 ExternallyAssignedProductIdentifier2 : 0722703771840 ExternallyAssignedProductIdentifier3 : 00008236066081 GradeRating : Grade A ItemName : Carriage Bolt Zinc Plated 307A Grade A Steel - 5/16"-18 x 6 FT - Qty-100 ItemPackageDimensions_Height : 10.5 centimeters ItemPackageDimensions_Length : 3.2 centimeters ItemPackageDimensions_Width : 4 centimeters ItemPackageQuantity : 1 ItemShape : Domed,round,square ItemTypeKeyword : carriage-bolts Manufacturer : RAW PRODUCTS CORP ManufacturerGrade : Grade A Material : Alloy Steel MetalType : Alloy Steel ModelNumber : 45923 NumberOfItems : 100 NumberOfPieces : 6 PartNumber : 722703771840 ProductDescription : Carriage Bolt Zinc Plated 307A Grade A Steel - 5/16"-18 x 6" FT - Qty-100 ProductSiteLaunchDate : 2016-01-23T08:00:00.000Z Size : 5/16"-18 x 6" Style : Carriage Bolt SupplierDeclaredDgHzRegulation : unknown UnitCount : 10 UnspscCode : 31161500