Specification Brand : Small Parts BulletPoint1 : Thread rolling screw recommended for use in metal BulletPoint2 : Steel is often used in applications where strength is the primary consideration BulletPoint3 : Zinc plating resists corrosion and has a reflective appearance BulletPoint4 : Flat head has an 82-degree cone-shaped bearing surface for use in countersunk holes and a flat top that fits flush with the mated surface 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 : Torx ExteriorFinish : Zinc ExternallyAssignedProductIdentifier1 : 0631772706083 ExternallyAssignedProductIdentifier2 : 631772706083 FinishType : Zinc ItemName : Small Parts 0405RTF Steel Thread Rolling Screw for Metal, Zinc Plated, 82 Degree Flat Head, Star Drive, #4-40 Thread Size, 5/16" Length (Pack of 100) ItemPackageDimensions_Height : 13.208 centimeters ItemPackageDimensions_Length : 1.905 centimeters ItemPackageDimensions_Width : 12.5984 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : thread-forming-and-cutting-screws Manufacturer : Small Parts Material : Steel MeasurementSystem : Imperial MetalType : Aluminum,Brass,Cast Iron,Plastic Steel,Steel,Zinc MetalType1 : Zinc MetalType2 : Alloy Steel ModelNumber : 0405RTF NumberOfItems : 100 NumberOfPieces : 5 PackageLevel : unit PartNumber : 0405RTF Pattern : Thread Cutting Screws ProductDescription : #10-24 Thread Cutting screws feature a thread cutting tip which makes threads in existing or pre-drilled holes. Made from black phosphate and oil-coated C1022 steel, these T25 floorboard screws are designed to last. ProductSiteLaunchDate : 2013-11-01T08:00:01.000Z Size : #4-40 StreetDate : 2017-05-15T00:00:01Z Style : Floorboard Screws SupplierDeclaredDgHzRegulation : unknown UnitCount : 100 UnspscCode : 31161500