S-90360A118 M18 DIN 6331 Flange Nuts

Key Features & Benefits at a Glance

• Enhanced load distribution with a 34mm flange diameter, reducing surface pressure and preventing material damage
• Superior corrosion resistance from the black oxide steel finish, extending service life in harsh industrial environments
• High-strength Class 10 rating ensures reliable performance in heavy-duty and high-vibration applications
• Secure coarse thread engagement with M18 x 2.5mm threads and Class 6H fit for quick assembly and reduced cross-threading risk
• Optimized torque transmission via the external hex drive and high-profile design, allowing for efficient installation with standard tools
• Compliance with DIN 6331 standards guarantees dimensional accuracy and interchangeability in metric fastener systems
• Environmental regulation adherence through RoHS 3 and REACH compliance, ensuring safe use in regulated industries

Professional Applications & Engineering Value

This M18 flange nut is engineered to address common industrial fastening challenges, such as joint loosening under dynamic loads and corrosion-induced failure. The black oxide steel construction provides a durable barrier against moisture and chemicals, ideal for outdoor machinery, automotive assemblies, and construction equipment. Its integrated 34mm flange acts as a built-in washer, distributing clamp force over a wider area to protect soft materials and reduce the need for additional components. The coarse metric thread and Class 6H thread fit ensure rapid, secure installation in high-volume production settings, while the high-profile hex design offers superior grip for torque tools, minimizing slippage. By meeting DIN 6331 specifications, this nut delivers consistent performance in heavy-duty fastening applications, from structural steelwork to industrial machinery maintenance.

Specification Summary & Compliance

This flange nut features M18 x 2.5mm coarse threads with a Class 6H thread fit per ISO metric standards, ensuring precise engagement and interchangeability. Manufacturing adheres to DIN 6331 for dimensional consistency, including a 27mm width and 5mm flange thickness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances for safe industrial use.