Wide Application: Widely used in household and office electrical appliances, communication equipment, ship assembly and other machinery industries. These hex nuts will be a good substitute for industrial and construction fasteners. Excellent Fastener Performance: Hex Nuts are used to join bolts, studs or machine screws to fasten two parts together, which makes it a piece. Thread design: the hexagon nut has a deep and clear long thread, tight connection, smooth surface, no burrs, meets inspection standards of strict quality and is safe and reliable to use. High quality materials: the hex nuts are made of galvanized carbon steel, with high strength, good corrosion resistance, greater wear resistance, durability and long service life. Product information: the nut is hexagonal, it has 6 sides, which provides good angular granularity for the tool; there are four sizes to choose from to meet your different needs Specification: Condition: 100% Brand New Material: Carbon Steel Surface Treatment: Galvanized Quantity: 10pcs Type Hex Size Weight: #01 M8*20, 11mm, 88g/3.1oz; #02 M8*28, 10mm, 71g/2.5oz; #03 M8*30, 12mm, 167g/5.9oz; #04 M8*40, 12mm, 223g/7.9oz (Optional) Package List: 10 x Hex Nut