Feature 1 Screw Nut Washer Kit: This M2 M3 M4 M5 flat head hex socket screw nut washer combination kit has a tight and uniform thread that is not easy to deform and slip during rolling and installation. 2 Anti Corrosion: This screw set has good corrosion resistance in harsh environments such as high temperature, cold, and high humidity. 3 Accuracy Thread: The precise thread design on the screw provides maximum tightening and secures the connector perfectly and securely. 4 Smooth Surface: The screws are smooth in appearance, uniform without burrs, easy to install, and not deformed under high pressure. 5 304 Stainless Steel: The spacers, screws and nuts in this set are all made of 304 stainless steel with fine workmanship and high strength.Item Type: Screw Nut Washer KitMaterial: 304 Stainless steelColor: SilverUses: Widely used in various precision machinery, sorting instruments, meters, electronic products, household appliances, communication products, locks, lamps, lamps, toys, etc. Package List140 x M2 Washer140 x M2 Nut30 x M2 x 20mm Screw30 x M2 x 16mm Screw30 x M2 x 12mm Screw30 x M2 x 8mm Screw140 x M3 Washer 140 x M3 Nut30 x M3 x 20mm Screw30 x M3 x 16mm Screw30 x M3 x 12mm Screw30 x M3 x 8mm Screw90 x M4 Washer90 x M4 Nut20 x M4 x 20mm Screw20 x M4 x 16mm Screw20 x M4 x 12mm Screw20 x M4 x 8mm Screw60 x M5 Washer50 x M5 Nut10 x M5 x 20mm Screw10 x M5 x 16mm Screw15 x M5 x 12mm Screw15 x M5 x 8mm Screw4 x Hex Wrench1 x Storage Box