S-97765A210 M20 DIN 6923, ISO 4161 Flange Nuts

Key Features & Benefits at a Glance

• Enhanced Load Distribution – The 42.8mm flange diameter spreads clamping force over a wider area, reducing surface pressure and preventing damage to assembled materials.
• Superior Vibration Resistance – The integrated flange acts as a built-in washer, maintaining clamp load under dynamic or high-vibration conditions, minimizing loosening risks.
• High Tensile Strength – Class 10 strength rating ensures reliable performance in heavy-duty applications, supporting high-stress fastening requirements.
• Excellent Corrosion Protection – Zinc yellow-chromate plating on steel provides durable resistance against rust and environmental degradation, extending service life.
• Precision Thread Fit – Class 6H internal thread tolerance guarantees consistent, secure mating with M20x2.5 coarse threaded bolts, reducing cross-threading and assembly errors.
• Broad Standard Compliance – Manufactured to DIN 6923 and ISO 4161 specifications, ensuring interchangeability and reliability in global engineering projects.
• Easy Installation & Removal – Standard 30mm external hex drive allows for quick, tool-friendly tightening with common wrenches, improving maintenance efficiency.

Professional Applications & Engineering Value

This M20x2.5 Class 10 flange nut is engineered to address critical challenges in heavy-duty industrial applications, such as machinery assembly, structural steelwork, and automotive systems. Its zinc yellow-chromate plated steel construction combats corrosion in harsh environments, while the 42.8mm flange diameter enhances joint integrity by distributing load effectively—preventing material indentation and bolt fatigue. The coarse metric thread and Class 6H fit ensure rapid, reliable engagement with compatible bolts, reducing installation time and improving safety in vibration-prone settings. By meeting DIN 6923 and ISO 4161 standards, it offers guaranteed performance for engineers requiring durable, standardized flange nut solutions that minimize maintenance and downtime.

Specification Summary & Compliance

This flange nut features an M20x2.5 coarse thread with Class 6H internal thread tolerance and right-hand thread direction. It conforms to DIN 6923 and ISO 4161 dimensional and mechanical standards, ensuring precise interchangeability. The zinc yellow-chromate plating provides RoHS and REACH compliant corrosion protection, and the Class 10 strength rating confirms high tensile performance suitable for demanding industrial use.