Specification Brand : Hillman BulletPoint1 : State of the art thread design cuts into concrete BulletPoint2 : Tapper screws are designed for fastening applications in concrete, block and brick BulletPoint3 : Use Tapper screws to attach electrical equipment, two by fours, downspout straps, hose reels, flag poles, Hurricane shutters and more BulletPoint4 : BLUE Parma-Seal coated BulletPoint5 : For use with treated lumber BulletPoint6 : BLUE Parma-Seal coated BulletPoint7 : For use with treated lumber BulletPoint8 : Building code approved Color : No Color DriveSystem : Phillips ExteriorFinish : Blue Perma Seal ExternallyAssignedProductIdentifier1 : 008236385731 ExternallyAssignedProductIdentifier2 : 0008236385731 ExternallyAssignedProductIdentifier3 : 00008236385731 ItemName : The Hillman Group 375309 Flat Head Phillips Tapper Concrete Screw Anchor, 1/4 x 2-1/4-Inch, 100-Pack ItemPackageDimensions_Height : 12.9 centimeters ItemPackageDimensions_Length : 7.8 centimeters ItemPackageDimensions_Width : 8.5 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : concrete-screws Manufacturer : The Hillman Group Material : Plastic MaximumShearStrength : 675 pounds_per_square_inch MeasurementSystem : Metric MetalType : Alloy Steel ModelName : The Hillman Group 375309 Flat Head Phillips Tapper Concrete Screw Anchor, 1/4 x 2-1/4-Inch, 100-Pack ModelNumber : 375309 NumberOfItems : 100 NumberOfPieces : 100 PackageLevel : unit PartNumber : 375309 ProductDescription : ApplicationsThe anchor is made from Carbon Steel, and is Blue. This anchor is designed for use in Concrete, Block, and Brick.EnvironmentThe anchor is designed for use in a Dry environment.Head Style The anchor is a Hex Washer head and is designed to allow the head to sit on top of the surface of the item being attached.Hole Diameter/Bit DiameterThe anchor requires a 3/16" hole to be drilled in the base material (Concrete, Block, and Brick). The hole should be drilled with carbide tipped bit that meets ANSI standards and used in a hammer drill.Driver RequiredA 5/16" nut driver is required for driving the anchor into the base material.Diameter of Anchor The diameter of the anchor is 1/4".Length Anchor The length of the anchor is 1-1/4"Thread LengthThe length of the threads on the anchor is 1-1/4" in length.Minimum EmbedmentThe minimum anchor embedment into the concrete is 1". Therefore, the anchor must be installed so that a minimum of 1" of the anchor is embedded into the concrete.Maximum Fixture ThicknessThe maximum fixture thickness or the maximum thickness of the material being fastened for a anchor is 0" to 1/4". This will ensure that the minimum embedment of 1" will be met.Fixture Hole DiameterThe hole in the fixture or material being fastened must be larger than the designated diameter of the anchor. The 1/4" diameter anchor requires the hole in the fixture to be 5/16".Spacing between AnchorsEach anchor must be spaced a minimum distance of 4" from each other when measured center to center.Edge DistanceIt is very important not to install the anchor any closer than 3" from an unsupported edge of the concrete. ProductSiteLaunchDate : 2007-02-17T04:53:08-00:00 Size : 1/4" x 2-1/4" SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 100 UnspscCode : 31161500