S-90374A123 M20 DIN 6923, ISO 4161 Flange Nuts

Key Features & Benefits at a Glance

• Enhanced Load Distribution - The 42.8mm flange diameter spreads pressure over a wider surface area, reducing the risk of material damage and loosening under heavy loads.
• Superior Corrosion Resistance - Zinc-plated steel construction provides a durable protective barrier, extending service life in harsh industrial environments.
• High-Strength Performance - Class 8 strength rating ensures reliable performance in demanding applications, offering excellent resistance to vibration and shock loads.
• Secure Thread Engagement - Class 6H thread fit with M20x2.5 coarse thread provides precise, reliable mating with bolts, minimizing cross-threading risks.
• Efficient Installation - External hex drive allows for quick and easy installation using standard tools, reducing assembly time and labor costs.
• International Compliance - Manufactured to DIN 6923 and ISO 4161 standards, ensuring dimensional accuracy and global interoperability.
• Environmental Responsibility - Compliant with REACH and RoHS 3 regulations, meeting strict environmental and safety standards for industrial use.

Professional Applications & Engineering Value

This Class 8 flange nut delivers exceptional engineering value by solving critical fastening challenges in heavy machinery, structural steelwork, and automotive assemblies. The zinc-plated steel construction combined with the 42.8mm flange diameter creates an integrated washer-like function that prevents surface damage and maintains clamping force under extreme vibration. The M20 coarse thread with 2.5mm pitch ensures rapid assembly while the external hex drive accommodates high-torque applications. Engineered to DIN 6923 and ISO 4161 specifications, this metric flange nut provides reliable performance in construction equipment, industrial machinery, and transportation systems where vibration resistance and long-term reliability are paramount.

Specification Summary & Compliance

This flange nut features precise Class 6H thread fit tolerance with M20x2.5 coarse thread and right-hand thread direction. Manufacturing complies with DIN 6923 and ISO 4161 standards for dimensional accuracy. The product meets REACH (EC 1907/2006) compliance (223 SVHC as of 01/17/2022) and RoHS 3 (2015/863/EU) environmental directives, ensuring safe usage across various industrial applications.