Item Type: Screw Assortment KitMaterial: 304 Stainless SteelM3 Washer: 300PCSM3 Nut: 300PCSScrew Specification: (Length does not include nuts)M3x25 30PCSM3x30 30PCSM3x12 55PCSM3x14 30PCSM3x16 30PCSM3x18 30PCSM3x20 30PCSM3x4 55PCSM3x5 55PCSM3x6 55PCSM3x8 55PCSM3x10 55PCSPackage List300 x Nuts300 x Washers510 x Screws1 x Tweezers1 x Hex Wrench1 x Storage Box1SPECIFICATIONS: M3 screw assortment kit, including 510pcs hex socket screws (12 sizes), 300pcs nuts, and 300pcs washers, to meet various usage needs. 2STAINLESS STEEL: These parts are made of excellent 304 stainless steel, have good rust, oxidation resistance and corrosion resistance, ensuring long term use. 3GOOD STABILITY: Nuts and flat washers expand the contact area and reduce pressure, preventing deformation and sliding during use to protect screws and parts. 4STANDARD SIZE: These screws, nuts and washers have standard sizes to ensure secure tightening and quick loosening, making them convenient and practical. 5WIDE APPLICATION: This M3 fastener kit is suitable for various machinery, instruments, electronic products, home appliances, locks, lighting devices, toys, etc. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.