S-90759A100 1/4"-20 Flange Nuts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel coating, extending service life in harsh industrial environments.
• Superior torque transmission and vibration resistance due to the 12-point external drive design, reducing the risk of loosening under dynamic loads.
• Precise thread engagement with Class 3B fit, ensuring reliable fastening and minimizing assembly errors.
• Increased load distribution from the 7/16" flange diameter, preventing surface damage and improving joint integrity.
• Quick and easy installation with coarse UNC threads, speeding up assembly in heavy-duty applications.
• Durable construction using standard hex nut profile and robust materials, ideal for repetitive use in demanding settings.
• Compatibility with standard tools via the external 12-point drive, facilitating efficient maintenance and adjustments.

Professional Applications & Engineering Value

This 1/4"-20 UNC flange nut is engineered to address common industrial challenges such as vibration-induced loosening and corrosion in machinery and structural assemblies. Made from black-oxide steel, it offers excellent protection against rust and wear, making it suitable for automotive, construction, and heavy equipment applications. The coarse thread spacing and Class 3B thread fit ensure quick, secure fastening even in high-stress environments, while the integrated flange eliminates the need for separate washers, reducing part count and assembly time. Its 12-point external drive design allows for high torque application, enhancing reliability in vibration-resistant setups and improving overall operational efficiency.

Specification Summary & Compliance

This flange nut adheres to UNC thread standards with a Class 3B thread fit for precise dimensional accuracy. It features a flange diameter of 7/16", flange thickness of 0.06", and coarse thread spacing, manufactured to common industrial specifications. The product complies with relevant standards such as ASME for mechanical fasteners and meets RoHS and REACH environmental directives, ensuring safe and sustainable use in various engineering applications.