S-90759A750 M8 Flange Nuts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel coating, extending service life in harsh industrial environments
• Superior load distribution thanks to the 13.6 mm flange diameter, reducing surface pressure and preventing material damage
• High-strength fastening with Class 5H thread fit, ensuring reliable performance under heavy-duty conditions
• Easy installation and removal using standard 12-point external drive tools, improving assembly efficiency
• Wide compatibility with M8 coarse thread (1.25 mm pitch) metric bolts, ideal for various industrial applications
• Durable construction from steel material, providing long-term reliability in demanding mechanical assemblies
• Secure vibration resistance due to the integrated flange design, maintaining clamp load in dynamic applications

Professional Applications & Engineering Value

This M8 black-oxide steel flange nut is engineered to address critical fastening challenges in industrial equipment, automotive assemblies, and machinery requiring metric coarse thread compatibility. The 12-point external drive allows for high-torque application with common tools, while the integrated flange eliminates the need for separate washers, simplifying inventory and reducing installation time. The black-oxide surface treatment provides a durable barrier against moisture and chemicals, making these nuts ideal for outdoor or corrosive environments where long-term corrosion resistance is essential. With its Class 5H thread fit, this nut ensures precise engagement with mating bolts, minimizing the risk of loosening under vibration and maintaining structural integrity in heavy-duty applications.

Specification Summary & Compliance

This flange nut features M8 x 1.25 mm coarse thread with Class 5H thread fit per ISO metric standards, ensuring dimensional accuracy and interchangeability. The external 12-point drive conforms to industry tooling specifications, while the 13.6 mm flange diameter and 1.6 mm thickness provide optimal bearing surface. Manufactured from steel with black-oxide finish for enhanced protection, this product complies with RoHS and REACH environmental directives, making it suitable for global industrial supply chains.