S-93033A213 M18 DIN 6331 Flange Nuts

Key Features & Benefits at a Glance

• Enhanced load distribution with a 34mm flange diameter, reducing surface pressure and preventing damage to connected materials
• Superior corrosion resistance thanks to 18-8 stainless steel construction, ideal for humid or chemically aggressive environments
• Reliable coarse threading (M18 x 2.5mm) ensures quick assembly and reduced risk of cross-threading in industrial applications
• Class 6H thread fit provides consistent, secure fastening with excellent vibration resistance
• External hex drive design allows for easy installation using standard wrenches, speeding up maintenance and assembly processes
• DIN 6331 compliance guarantees dimensional accuracy and mechanical performance for heavy-duty use
• Environmental and safety compliance with REACH and RoHS 3, ensuring safe use in regulated industries

Professional Applications & Engineering Value

Engineered for demanding environments, this M18 flange nut combines 18-8 stainless steel with a coarse thread (2.5mm pitch) to deliver robust performance in machinery, structural assemblies, and automotive systems. The integrated 34mm flange eliminates the need for separate washers, distributing clamp load evenly to prevent joint loosening under vibration. Its Class 6H thread fit and external hex drive ensure precise, tool-friendly installation, reducing assembly time and minimizing failure risks. Ideal for industrial fasteners in corrosive settings, this nut meets DIN 6331 specifications, offering long-term reliability where durability and compliance are critical.

Specification Summary & Compliance

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