Feature:1. CORROSION RESISTANT CARBON STEEL: Made of excellent carbon steel, possess high strength, black surface treatment, wear resistant, corrosion resistant, durable2. ASSORTMENT KIT: The package includes M2, M3, M4, M5 screws and nuts in four specifications, using the DIN912 standard3. WITH SPACER: The package is also equipped with corresponding spacers to meet your various needs at work4. WIDE APPLICATION: Widely used in electronics, hardware, lighting, toys, bathroom, furniture, sports equipment and other industries5. 1220PCS IN TOTAL: The package contain a total of 1220pcs, enough for you to replace and use, equipped with a plastic box for easy storageSpecification:Item Type: Hex Socket Screw Nut Washer KitMaterial: Carbon steelStandard: DIN912.Package List:140 x M2 Nut140 x M3 Nut90 x M4 Nut50 x M5 Nut140 x M2 Washer140 x M3 Washer90 x M4 Washer60 x M5 Washer10 x M5x20 Screw20 x M4x20 Screw30 x M3x20 Screw30 x M2x20 Screw10 x M5x16 Screw20 x M4x16 Screw30 x M3x16 Screw30 x M2x16 Screw15 x M5x12 Screw20 x M4x12 Screw30 x M3x12 Screw30 x M2x12 Screw15 x M5x8 Screw20 x M4x8 Screw30 x M3x8 Screw30 x M2x8 Screw1 x Plastic Box