Specification Brand : XunLiu BulletPoint1 : Hardness of 14.9, very durable hardness, not easy to damage. BulletPoint2 : The surface is plated with anti-rust coating to prevent rust damage. BulletPoint3 : This mechanical screw is widely used for fixing the housing or internal parts of various types of machinery, household equipment, office equipment. BulletPoint4 : Knuled head easy to use. BulletPoint5 : Package Content: (+/-5%)Hex Socket Cap Screw Color : black CompatibleGrooveDiameter : 0.41 inches DriveSystem : External Hex ExteriorFinish : Alloy Steel ExteriorFinish1 : Stainless Steel ExteriorFinish2 : Brass ExternallyAssignedProductIdentifier1 : 608754843166 ExternallyAssignedProductIdentifier2 : 0608754843166 FinishType : Steel GpsrSafetyAttestation : 1 GradeRating : grade_12.9 ItemName : XunLiu 50PCS Grade 14.9 Alloy Steel Hex Socket Head Cap Screws Allen Wrench Drive Knurled Screws Black M2.5 28MM ItemPackageDimensions_Height : 7.62 centimeters ItemPackageDimensions_Length : 1.524 centimeters ItemPackageDimensions_Width : 3.556 centimeters ItemPackageQuantity : 50 ItemShape : Cylinder ItemTypeKeyword : socket-cap-screws Manufacturer : XunLiu Material : Metal MeasurementSystem : Metric MeasurementSystem1 : Imperial MeasurementSystem2 : Metric MetalType : Alloy Steel ModelNumber : M2.5 28mm NumberOfItems : 1 NumberOfPieces : 380 PartNumber : M2.5 28mm ProductDescription : This is a very common world universal machine screw .Widely used for fixing the housing or internal parts of various types of machinery, household equipment, office equipment.DIY user's good helper, can be used for any non-metallic, hardness is lower than 14.9, such as wood, plastics, clay can be used for splicing materials, fixed objects, not easy to loose. ProductSiteLaunchDate : 2018-04-19T07:00:00.000Z Size : M2.5X28(50PCS) Style : Brushed SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 50 UnspscCode : 31161500