DIN EN 1661 specifies the dimensions, tolerances, and performance requirements for hexagon nuts with flange. Their integrated design offers significant advantages for automotive manufacturing: Key Advantages for Your Automotive Applications: Simplified Assembly: Eliminates the need for separate washers, reducing part count and assembly time. Improved Vibration Resistance: Ensures secure connections in high-vibration automotive environments. Enhanced Load Distribution: Protects mating surfaces and provides a more stable connection. Reduced Risk of Incorrect Assembly: The integrated design prevents the omission or misplacement of washers. Compliance with Automotive Standards: DIN EN 1661 is a recognized European standard ensuring quality and interchangeability. Ideal for Automotive Applications Such As: Chassis and Suspension Components: Securing critical structural elements where vibration resistance and load distribution are paramount. Engine and Powertrain Assemblies: Fastening components subject to significant vibration and thermal cycling. Exhaust Systems: Providing secure and lasting connections in high-temperature and corrosive environments. Body and Trim Attachment: Efficiently and securely fastening panels, brackets, and other interior and exterior trim pieces. Wheel Assembly: Ensuring the safe and reliable attachment of wheels. Any Application Requiring Secure Fastening and Vibration Resistance: Offering a dependable solution across various automotive systems. Product NameStandardMaterialDiameter (Metric)Diameter (Imperial)Height (mm)Hexagon Nuts with FlangeGB/T 6177-2000Carbon Steel (A3), Zinc PlatedM5–M20N/A5–25Hexagon Nuts with Flange (Style 2)ISO 10663:2012Stainless Steel A2/A4M8–M20N/A6.5–28Hexagon Weld Nuts with FlangeQC/T 872-2011Carbon Steel, ElectroplatedM5–M16N/A8–20Hexagon Nuts with Flange (Heavy Series)DIN 6923Alloy Steel 35CrMo, DacrometM10–M24N/A10–30Large Flange Raised Face Nuts (Automotive Wheel)QC/T 354-1999Carbon Steel (Grade 10.9), PhosphateM16–M245/8"–1"20–35Hexagon Nuts with Non-Metallic InsertISO 7043:1983Steel + Nylon 6/6 InsertM6–M12N/A5–18Hexagon Thin Nuts with FlangeQC/T 362-1999Stainless Steel 304M5–M12N/A3–10Hexagon Lock Nuts with FlangeDIN 6924Steel + Prevailing Torque DesignM8–M20N/A8–25