Features Package include: 360 Pcs Washer, 360 Pcs Nut, 360 Pcs Screw, 3 Pcs Hex Screwdriver and 1 Storage box. Multiple Size: 18 sizes of hex round head bolts screws nuts washers in one box. Catering for different people's needs, a necessity for your home life. Perfect for replacing damaged and missing screws. Excellent Rust Resistant: The hex round head bolts with cap screw set is made of excellent 304 stainless steel. They have superior rust and oxidation resistance to ensure long service life. No Deformation: The nut and flat washer extend the contact area and reduce pressure to protect the screw and parts. The tight threads are evenly stressed and are less likely to deform and slide during rolling and installation. Wide Application: The hex screw kit can be widely used in various accuracy machinery, classified instruments, meters, electronic products, household appliances, communication products, locks, lamps, lightings, toys, ETC. Specification: Item Type: Hex Socket Cap Screw Material: 304 Stainless steel Screw Type: M2 M3 M4 washer nutscrew120PCS M2120PCS M220pcs M2 x 2020pcs M2 x 1620pcs M2 x 1220pcs M2 x 820pcs M2 x 620pcs M2 x 4 120PCS M2120PCS M320pcs M3 x 3020pcs M3 x 2020pcs M3 x 1620pcs M3 x 1220pcs M3 x 820pcs M3 x 4120PCS M2120PCS M420pcs M4 x 3020pcs M4 x 2020pcs M4 x 1820pcs M4 x 1420pcs M4 x 1020pcs M4 x 6 Package List: 360 x Washer 360 x Nut 360 x Screw 3 x Hex Screwdriver 1 x Storage box Package List 360 x Washer 360 x Nut 360 x Screw 3 x Hex Screwdriver 1 x Storage box