S-90759A300 3/8"-16 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through the integrated flange design, eliminating the need for separate washers and maintaining joint integrity in high-stress environments.
• Enhanced corrosion protection from the black-oxide steel finish, extending service life and reducing maintenance costs in harsh industrial settings.
• High-torque application capability with the external 12-point drive, allowing for secure installation with standard tools and minimizing the risk of stripping.
• Precise and reliable fastening ensured by the Class 3B thread fit, providing tight tolerances for critical assemblies and reducing the chance of loosening.
• Quick and easy installation with coarse UNC threading, speeding up assembly processes and improving overall project efficiency.
• Durable and long-lasting performance from the robust black-oxide steel material, capable of withstanding heavy loads and repetitive use without failure.
• Wide compatibility with standard 3/8"-16 UNC components, making it a versatile choice for various industrial and engineering applications.

Professional Applications & Engineering Value

This 3/8"-16 UNC flange nut is engineered from black-oxide steel to address common industrial challenges such as vibration-induced loosening and corrosion. The integrated flange distributes clamping force evenly, reducing point stress and enhancing joint stability in machinery, automotive, and structural assemblies. Its coarse thread spacing and Class 3B precision thread fit ensure quick, secure fastening even in dirty or high-vibration environments, minimizing downtime. The external 12-point drive allows for high-torque application with standard wrenches, making it ideal for heavy-duty applications where reliability is critical. This nut delivers consistent performance in demanding settings, from construction equipment to manufacturing lines, by combining material durability with smart design to solve fastening inefficiencies.

Specification Summary & Compliance

This flange nut adheres to UNC thread standards with a Class 3B thread fit for precise dimensional accuracy, including a flange diameter of 5/8" and coarse thread spacing. Manufactured from black-oxide steel in the inch system, it meets industry specifications for heavy-duty use. The product complies with relevant RoHS and REACH directives, ensuring environmental safety, and is produced in line with ASME and other mechanical fastening standards for reliable performance in industrial applications.