S-90997A340 M12 Flange Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with A286 stainless steel construction, ensuring long-term durability in harsh environments and reducing replacement costs
• Exceptional load distribution thanks to the 19.1mm flange diameter and 3.2mm thickness, minimizing surface pressure and preventing joint loosening
• Precise Class 5H thread fit for reliable, vibration-resistant connections that maintain integrity under dynamic loads
• High-torque application capability with the 12-point external drive design, allowing for secure tightening in confined spaces
• Fine 1.25mm thread pitch providing enhanced clamping force control and superior resistance to loosening in high-vibration settings
• Metric standard compliance ensuring seamless integration with existing M12 threaded components in global industrial applications
• Optimized 12.8mm height profile offering a compact design without sacrificing strength, ideal for space-constrained assemblies

Professional Applications & Engineering Value

This M12 flange nut delivers exceptional engineering value in demanding applications where vibration resistance, corrosion protection, and precise torque control are critical. Manufactured from A286 stainless steel, it solves common fastener failures in corrosive environments like chemical processing, marine equipment, and outdoor infrastructure. The fine 1.25mm thread pitch and Class 5H thread fit ensure minimal backlash and maintained preload, addressing vibration-induced loosening in machinery, automotive systems, and structural frameworks. The 12-point external drive enables high torque application with standard tools, reducing installation time while the integrated flange eliminates the need for separate washers, streamlining assembly processes in aerospace, heavy machinery, and precision equipment manufacturing.

Specification Summary & Compliance

This metric flange nut features M12 x 1.25mm fine threads with Class 5H thread fit per ISO standards, ensuring precise dimensional accuracy and interchangeability. The external 12-point drive conforms to industry torque application specifications, while the 19.1mm flange diameter and 3.2mm thickness provide optimal load distribution. Manufactured from A286 stainless steel, it meets rigorous material performance requirements and complies with RoHS and REACH environmental directives for safe use in global industrial applications.