Feature:1. Adopting premium 304 stainless steel, reliable and rustproof, has high hardness, very durable.2. The lock washer and flat washer are installed on the screw, convenient to use and time-saving.3. Including many screws and nuts in various sizes, which will surely meet all your working needs.4. Can be widely used in fine machinery industries, classified instruments, electronic products, etc.5. The storage will accommodate all the items in an orderly way, very easy to carry for daily use.Specification:Item Type: Cross Pan Head ScrewMaterial: 304 Stainless SteelModel: M5 x 12, M5 x 16, M5 x 20, M5 x 25, M5 Nuts, M4 x 12, M4 x 16, M4 x 20, M4 x 25, M4 Nuts, M3 x 12, M3 x 16, M3 x 20, M3 x 25, M3 Nuts. Application: This kit can be widely used in various fine machinery industries, classified instruments, electronic products, household appliances, communication products, locks, lamps, toys, etc..Package List:10 x M5 x 12 Cross Pan Head Screw10 x M5 x 16 Cross Pan Head Screw10 x M5 x 20 Cross Pan Head Screw10 x M5 x 25 Cross Pan Head Screw40 x M5 Nut15 x M4 x 12 Cross Pan Head Screw15 x M4 x 16 Cross Pan Head Screw15 x M4 x 20 Cross Pan Head Screw15 x M4 x 25 Cross Pan Head Screw60 x M4 Nut20 x M3 x 12 Cross Pan Head Screw20 x M3 x 16 Cross Pan Head Screw20 x M3 x 20 Cross Pan Head Screw20 x M3 x 25 Cross Pan Head Screw80 x M3 NutNote:Lock washers and flat washers cannot be removed from the screws.