Features 1、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. 2、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. 3、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. 4、Weak Magnetism: The magnetic properties of the 304 stainless steel used in this hex screw kit are not at the same level as those of other materials of stainless steel due to the transformation of the organisation, which means that the magnetic properties of 304 steel always exhibit weak magnetism. 5、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 nut screw screw screw screw screw screw 120PCS M2 120PCS M2 20pcs M2 x 20 20pcs M2 x 16 20pcs M2 x 12 20pcs M2 x 8 20pcs M2 x 6 20pcs M2 x 4 120PCS M2 120PCS M3 20pcs M3 x 30 20pcs M3 x 20 20pcs M3 x 16 20pcs M3 x 12 20pcs M3 x 8 20pcs M3 x 4 120PCS M2 120PCS M4 20pcs M4 x 30 20pcs M4 x 20 20pcs M4 x 18 20pcs M4 x 14 20pcs M4 x 10 20pcs M4 x 6 Package List 360 x Washer 360 x Nut 360 x Screw 3 x Hex Screwdriver 1 x Storage box