Specification Brand : Fastenere BulletPoint1 : no model BulletPoint2 : Lightning BulletPoint3 : Bolts DriveSystem : External Hex ExteriorFinish : Steel ExternallyAssignedProductIdentifier : 1160011696698 FinishType : Zinc ItemName : Lag Bolt Screw Hot Dipped Galvanized A307 Alloy Steel 5/16 x 4-1/2 Qty 50 ItemTypeKeyword : lag-screws Manufacturer : Fastenere Material : Steel MeasurementSystem : Imperial MetalType : Alloy Steel MetalType1 : Low Carbon Steel MetalType2 : Zinc MetalType3 : Alloy Steel ModelNumber : no model NumberOfItems : 50 PartNumber : HexHea ProductDescription : Material : Galvanized A307 Alloy Steel. Lag screws, also commonly reffered to as lag bolts, are heavy duty wood fasteners. Lag screws require a pilot hole pre drilled before installation and to be driven in with a ratchet due to their size. ProductSiteLaunchDate : 2014-12-21T09:51:43.210Z Size : 4.5 inches Style : Lag Screws UnitCount : 50 UnspscCode : 31161500