S-90759A780 M9 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 15.6 mm flange diameter, reducing surface pressure and preventing joint loosening.
• High-strength thread engagement with Class 5H fit ensures reliable, vibration-resistant fastening in demanding applications.
• Efficient installation and removal via the 12-point external drive, allowing for high-torque application with standard tools.
• Durable coarse thread design (M9 x 1.25 mm) resists cross-threading and provides quick assembly in machinery and automotive systems.
• Versatile metric compatibility for seamless integration with international equipment and fastener standards.
• Robust construction with 8 mm height and 11 mm width, offering a compact yet strong profile for space-constrained assemblies.

Professional Applications & Engineering Value

This black-oxide steel flange nut is engineered to address common industrial fastening challenges, such as vibration-induced loosening and corrosion in high-stress environments. The M9 coarse thread with a 1.25 mm pitch ensures quick, secure installation in automotive chassis, heavy machinery, and industrial equipment, minimizing assembly time while maintaining integrity under dynamic loads. The 12-point external drive design allows for precise torque application, reducing the risk of tool slippage and damage during maintenance. Combined with the 15.6 mm flange, it distributes clamping force evenly, protecting sensitive components from deformation and enhancing the longevity of critical connections in corrosive or high-vibration settings.

Specification Summary & Compliance

This flange nut adheres to metric coarse thread standards with M9 x 1.25 mm dimensions and a Class 5H thread fit for precise tolerance control. Manufactured from black-oxide coated steel, it meets general industry specifications for durability and is compliant with RoHS and REACH environmental directives, ensuring safe use in various engineering applications. The external 12-point drive conforms to common tooling systems for reliable performance in assembly and disassembly operations.