Specification Brand : Small Parts BulletPoint1 : Thread cutting screw with type 1 point style has fine machine screw threads that taper down to a blunt edge with a chip clearing flute and is suitable for field replacement applications BulletPoint2 : Steel is often used in applications where strength is the primary consideration BulletPoint3 : Zinc plating resists corrosion and has a reflective appearance BulletPoint4 : Hex washer head has a flange for additional grip with the mating surface and has six flat sides that a wrench can grip to turn from the side BulletPoint5 : Star drive has a six-pointed indentation that provides a large contact area for the driver, resisting slippage better than a Phillips or slotted drive Color : zinc DriveSystem : External Hex ExteriorFinish : Zinc ExternallyAssignedProductIdentifier1 : 8965441124093 ExternallyAssignedProductIdentifier2 : 8965441125236 GradeRating : 18-8 ItemName : Small Parts 31081W Steel Thread Cutting Screw, Zinc Plated Finish, Hex Washer Head, Type 1, 5/16"-18 Thread Size, 1/2" Length (Pack of 10) ItemPackageDimensions_Height : 11.9126 centimeters ItemPackageDimensions_Length : 2.0066 centimeters ItemPackageDimensions_Width : 11.811 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : thread-forming-and-cutting-screws Manufacturer : Small Parts Material : Steel MaximumShearStrength : 300 MPa MeasurementSystem : Imperial MetalType : Alloy Steel ModelNumber : 31081W NumberOfItems : 10 NumberOfPieces : 10 PackageLevel : unit PartNumber : 31081W ProductDescription : Hex Washer Head Thread Cutting Screws Type "F" Bright Zinc Chromate Size: 1/4"-20 X 5/8" Hex Size: 3/8" 100 Per Package ProductSiteLaunchDate : 2014-01-01T08:00:01.000Z Size : 5/16"-18 StreetDate : 2017-05-15T00:00:01Z SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 10 UnspscCode : 31161500