Specification Brand : Small Parts BulletPoint1 : Thread rolling screw recommended for use in plastic BulletPoint2 : Steel is often used in applications where strength is the primary consideration BulletPoint3 : Zinc plating resists corrosion and has a black reflective appearance BulletPoint4 : Pan head has a flat top and short vertical sides with a rounded top edge 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 : black DriveSystem : Torx ExteriorFinish : Zinc ExternallyAssignedProductIdentifier1 : 665268094026 ExternallyAssignedProductIdentifier2 : 0665268094026 GradeRating : Grade 4 8 ItemName : Small Parts 0406LTPBZ Steel Thread Rolling Screw for Plastic, Black Zinc Plated, Pan Head, Star Drive, #4-20 Thread Size, 3/8" Length (Pack of 100) ItemPackageDimensions_Height : 11.43 centimeters ItemPackageDimensions_Length : 0.508 centimeters ItemPackageDimensions_Width : 10.922 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : thread-forming-and-cutting-screws Manufacturer : Small Parts ManufacturerGrade : Grade A2 70 Material : Steel MeasurementSystem : Imperial MeasurementSystem1 : Imperial MeasurementSystem2 : Metric MetalType : Plastic Steel,Zinc,Plastic,Steel ModelNumber : 0406LTPBZ NumberOfItems : 100 NumberOfPieces : 50 PackageLevel : unit PartNumber : 0406LTPBZ ProductDescription : Made of 304 stainless steel for maximum corrosion resistance and durability. Features socket cap head, hex socket drive. Shoulder Bolt can reduce rotation through lock. Widely used in textile, hydraulic, injection , machinery industry in different applications. Specially used for injection accessories.