S-91045A029 1/4"-20 Flange Nuts

Key Features & Benefits at a Glance

• Integrated washer design eliminates the need for separate washers, saving assembly time and reducing component count
• 2½° leveling correction capability provides precise adjustment for uneven surfaces in industrial equipment installation
• Black-oxide steel construction offers enhanced corrosion resistance for extended service life in demanding environments
• UNC coarse threading with Class 2B fit ensures reliable engagement and vibration resistance in high-stress applications
• 5/8" flange diameter distributes clamping force over a wider area, preventing surface damage and improving joint integrity
• External hex drive design allows for standard wrench access and high torque application during installation
• RoHS 3 compliance meets international environmental standards while maintaining mechanical performance

Professional Applications & Engineering Value

This black-oxide steel flange nut addresses critical leveling challenges in industrial machinery installation, manufacturing equipment, and structural frameworks. The integrated UNC coarse thread design with Class 2B fit provides exceptional vibration resistance, preventing loosening in high-stress environments while the 2½° correction capability compensates for surface irregularities without compromising joint integrity. The external hex drive facilitates efficient installation using standard tools, reducing assembly time in production settings. The black-oxide surface treatment creates a protective barrier against corrosion, extending service life in humid or chemically aggressive industrial environments where reliable leveling performance is essential for operational safety and precision alignment.

Specification Summary & Compliance

This 1/4"-20 flange nut features UNC coarse threading with Class 2B thread fit tolerance for reliable engagement, manufactured to standard industrial specifications. The component maintains dimensional accuracy with a 5/8" flange diameter, 1/2" width, and 7/16" height. Compliance includes RoHS 3 (2015/863/EU) certification with exemption 6(a) for lead as an alloying element in steel, ensuring environmental regulation adherence while maintaining the mechanical properties required for industrial leveling applications.