1These hex nuts are made of zinc plated carbon steel material, which provides strength and zinc cover offers good corrosion resistance. 2Hexagonal shape has 6 sides that gives a good granularity of angles for a tool to approach from. 3These hex nuts will be great replacement for industrial and construction fasteners. 4Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry. 5Used to fit bolts, studs or machine screws for fastening two parts together to make them one piece. Features: 1. These hex nuts are made of zinc plated carbon steel material, which provides strength and zinc cover offers good corrosion resistance. 2. Hexagonal shape has 6 sides that gives a good granularity of angles for a tool to approach from. 3. These hex nuts will be great replacement for industrial and construction fasteners. 4. Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry. 5. Used to fit bolts, studs or machine screws for fastening two parts together to make them one piece. Specification: Condition: 100% Brand New Product material: carbon steel Surface treatment: galvanized Quantity: 10pcs Type: M6 * 18, M6 * 25, M6 * 30 (optional) Package list: 10 * Standoff