Specification Brand : MAKERS BOLT BulletPoint1 : Diameter: 1/2" | Length: 3-1/2" | Head width: 3/4" BulletPoint2 : Kit includes 25 Grade 307A lag bolts and 25 USS flat washers (outside diameter 1-3/8") BulletPoint3 : Hot-Dip Galvanized for superior rust resistance BulletPoint4 : Suitable for use in ACQ treated lumber, pilot hole recommended for installation BulletPoint5 : Meets ASTM A307, ASME B18.2.1, ASME B18.21.1, and ASTM F2329 Color : Assorted Color DriveSystem : External Hex ExteriorFinish : Hot-Dip Galvanized ExternallyAssignedProductIdentifier : 6259849747490 ExternallyAssignedProductIdentifier1 : 810074743082 ExternallyAssignedProductIdentifier2 : 0810074743082 GradeRating : Grade A307 ItemDisplayDimensions_Length : 1.18 centimeters ItemName : 1/2 x 3-1/2 (25 Pack) Lag Screw Kit, 25 Screws and 25 washers, Hot Dip Galvanized, Meets ASME B18.2.1 Industrial/Commercial Grade by Makers Bolt ItemPackageDimensions_Height : 22.4 centimeters ItemPackageDimensions_Length : 6 centimeters ItemPackageDimensions_Width : 19.2 centimeters ItemTypeKeyword : lag-screws Manufacturer : Makers Bolt Material : Steel MetalType : Alloy Steel ModelName : Kimissfv14zrghes ModelNumber : BORDSTRACTh58snwpr4m NumberOfLithiumMetalCells : 1 NumberOfPieces : 25 PartNumber : LBK5056GV25 ProductDescription : Features: These circlips can be snapped into a machined groove on a dowel pin or other part to permit rotation but to prevent lateral movement. Two basic types of internal and external can fit into a bore or over a shaft. There are total 18 different sizes of circlips that you can use for different purposes and projects. This set includes 225 pieces circlips so you do not have to worry about running out of circlips for quite a while. All circlips are well packed and assorted in a resealable plastic box for convenient carry and storage.