Specification Brand : RAW PRODUCTS CORP BulletPoint1 : Lag bolts feature a hex head and are designed to be driven with a wrench or hex driver. BulletPoint2 : Lag screws are also commonly called lag bolts because they are significantly larger than most other screws. BulletPoint3 : Essentially, it is just a very large wood screw with the threads extending to the top. BulletPoint4 : They feature the sharp cutting threads of a wood screw or sheet metal screw and have a shoulder below the head (in longer lengths), however everything is scaled up in size for use in larger applications. BulletPoint5 : These screws typically need a pre-drilled whole and are not recommended as self-tapping. Color : Silver DriveSystem : External Hex ExteriorFinish : Plain ExternallyAssignedProductIdentifier1 : 756554504142 ExternallyAssignedProductIdentifier2 : 0756554504142 GradeRating : Grade 5 ItemName : Hex Lag Screws 18-8 Stainless Steel - 5/16" x 3" Qty-25 ItemPackageQuantity : 1 ItemTypeKeyword : lag-screws Manufacturer : RAW PRODUCTS CORP Material : Stainless Steel MeasurementSystem : Imperial MetalType : Stainless Steel NumberOfItems : 25 PartNumber : 756554504142 ProductDescription : Hex Lag Screws 18-8 Stainless Steel - 5/16" x 3" Qty-25 ProductSiteLaunchDate : 2013-09-19T18:57:09.911Z Size : 5/16"-9 x 3" Style : Hex Head Screw SupplierDeclaredDgHzRegulation : unknown UnitCount : 1 UnspscCode : 31161500