Specification Brand : Walfront BulletPoint1 : 3M Screw Material: 12.9 grade alloy steel material, which is non-greasy, oxidation-resistant, corrosion-resistant and not easy to deform, suitable for long-term storage and long-term use. BulletPoint2 : Screws Assortment Kit: Total 280 pcs M3 x 4/5/6/8/10/12/16/20/25mm Black Hexagon socket cheese head screws with lock nut and lock washer in various sizes and in sufficient quantities to meet your different daily needs. BulletPoint3 : M3 Screw Kit: Screws and nuts are well packed in 10 compartments and assorted in a transparent plastic box for convenient use and storage. BulletPoint4 : Functions of Small Screws: 3M screws is ideal for use in confined areas as fixing component, industrial and construction fasteners. BulletPoint5 : Widely Used in: fasteners for household and office equipment, communication equipment, ship assembly or machinery industry. Color : Black CompatibleGrooveDiameter : 3 millimeters ExternallyAssignedProductIdentifier1 : 736691346294 ExternallyAssignedProductIdentifier2 : 0736691346294 FinishType : Black Oxide GradeRating : grade_12.9 ItemName : Walfront M3 Screws Assortment Kit, M3 Button Head Screws, Grade 12.9 M3 Socket Head Screws Bolts Nuts Fastener Kit with Storage Case 4/5/6/8/10/12/16/20/25mm Length(280PCS) ItemPackageDimensions_Height : 14 centimeters ItemPackageDimensions_Length : 2.5 centimeters ItemPackageDimensions_Width : 6.8 centimeters ItemPackageQuantity : 1 ItemShape : Cylindrical ItemTypeKeyword : socket-cap-screws Manufacturer : Walfront Material : Alloy Steel MaximumShearStrength : High ModelNumber : Walfrontpy79eztmvg NumberOfPieces : 280 PartNumber : Walfrontpy79eztmvg ProductDescription : Description: These Coverhead hex socket screws are made of 12.9 grade alloy steel with oxidation surface, which are resistant to rust and . There are 9 thread lengths for you to choose from, which can be generally used in home and office appliance, machinery, furniture, etc.