540 Pcs M5 Machine Screw Assortment Kit, M5 Metric Bolts And Nuts Assortment, What are the advantages of our M5 screw kit? Exquisite Materials: All M5 hex button head bolts and nuts kits are made of high-quality 10.9 grade carbon steel, which is strong, anti-corrosive, not easy to rust, and strong, with long-lasting durability and stability Hex Socket Button Head Cap Screws and Nuts and Washers Set: M5 Round head hex socket head cap screws bolts design, uniform force, deep thread and precise thread, not easy to deform or slip during work Hex Nuts and Washers Set: Each pan head hex socket metric bolt assortment is equipped with a hex nut for more precise installation; washers can increase the contact area, reduce stress and protect parts and screws Wide Application: Widely used in home and office appliances, communication equipment, ship assembly, machinery industry, furniture, automobile and motorcycle repair, DIY and other fields Package Includes: A total of 540 pcs, sizes and quantities include: M5 x 6mm/8mm/10mm/12mm/14mm/16mm/18mm/20mm/25mm/30mm/35mm/40mm, including nuts and washers of corresponding sizes, and 1 x allen wrench, to meet daily use needs