S-90360A122 M30 DIN 6331 Flange Nuts

Key Features & Benefits at a Glance

• Exceptional load distribution with a 58mm flange diameter, reducing surface pressure and preventing joint loosening under vibration
• Superior corrosion resistance from black oxide steel coating, extending service life in harsh industrial environments
• Maximum thread engagement reliability with Class 6H thread fit, ensuring precise mating and reduced cross-threading risks
• High-strength performance meeting Class 10 requirements, suitable for critical structural and heavy machinery applications
• Enhanced wrench grip with high-profile external hex design, allowing higher torque application without tool slippage
• Standardized compatibility through DIN 6331 compliance, guaranteeing interchangeability with metric coarse thread components
• Regulatory compliance assurance with REACH and RoHS 3 certifications, meeting international environmental and safety standards

Professional Applications & Engineering Value

This high-strength flange nut delivers critical engineering solutions for heavy-duty industrial applications where vibration resistance and joint integrity are paramount. The black oxide steel construction provides superior protection against rust and corrosion in manufacturing plants, construction equipment, and transportation systems. The integrated 58mm flange eliminates the need for separate washers while distributing clamp load across a wider surface area, preventing material deformation and maintaining bolt preload in high-vibration environments. With its Class 10 strength rating and metric coarse threads, this DIN 6331 compliant fastener ensures reliable performance in structural steel connections, machinery assembly, and other demanding applications where failure is not an option.

Specification Summary & Compliance

Manufactured to DIN 6331 standards with Class 6H thread tolerance for precise metric thread engagement. Features M30x3.5 coarse thread configuration with right-hand thread direction and external hex drive design. The black oxide steel construction meets Class 10 strength requirements with dimensional specifications including 58mm flange diameter, 8mm flange thickness, and 46mm width across flats. Fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations for industrial safety and international market acceptance.