S-94777A213 M18 DIN 6331 Flange Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance for extended service life in harsh environments, thanks to 316 stainless steel construction
• Enhanced load distribution and vibration resistance with the integrated 34mm flange, reducing the risk of surface damage and loosening
• Reliable coarse thread engagement with M18 x 2.5mm pitch for quicker assembly and reduced cross-threading in industrial applications
• Precise Class 6H thread fit ensures consistent clamping force and secure fastening in high-stress scenarios
• External hex drive design provides compatibility with standard tools, facilitating efficient installation and maintenance
• Compliance with DIN 6331 standard guarantees dimensional accuracy and interchangeability for professional use
• Environmental and safety assurance through REACH and RoHS 3 certifications, making it suitable for regulated industries

Professional Applications & Engineering Value

This M18 flange nut is engineered to address common industrial challenges such as corrosion, vibration-induced loosening, and assembly inefficiency. Constructed from 316 stainless steel, it offers exceptional resistance to corrosive elements like saltwater and chemicals, making it ideal for marine, chemical processing, and outdoor infrastructure. The integrated flange eliminates the need for separate washers by distributing clamp load over a wider area, which helps prevent surface indentation and maintains joint integrity under dynamic loads. With a coarse metric thread (M18 x 2.5mm), it allows for faster installation and reduced risk of thread damage in high-vibration environments like machinery and automotive assemblies. Compliant with DIN 6331, this nut ensures reliable performance in heavy-duty applications, from construction to manufacturing, where durability and compliance are critical.

Specification Summary & Compliance

This flange nut features precise dimensions including a 34mm flange diameter, 5mm flange thickness, and standard hex profile (27mm width/height). It adheres to DIN 6331 standards with a metric coarse thread (M18 x 2.5mm) and Class 6H thread fit for accurate tolerances. The product is manufactured in compliance with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU), ensuring it meets environmental and safety regulations for industrial use.