S-94831A750 7/8"-9 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through serrated locking design that bites into surfaces to prevent loosening under dynamic loads
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in harsh industrial environments
• Simplified installation process with external hex drive design allowing for standard wrench access and efficient torque application
• Increased bearing surface area from the 1-11/16" flange diameter that distributes clamping force and reduces material stress
• Reliable thread engagement with Class 2B thread fit ensuring consistent performance and reduced cross-threading risks
• Optimized for heavy-duty applications featuring coarse UNC threads that provide faster assembly and better debris resistance
• Built-in washer functionality eliminating the need for separate washers while providing superior load distribution

Professional Applications & Engineering Value

This 7/8"-9 UNC flange lock nut delivers critical vibration-resistant performance for demanding industrial applications where secure fastening is paramount. The zinc-plated steel construction provides essential corrosion protection while maintaining high tensile strength, making it ideal for outdoor equipment, heavy machinery, and structural assemblies exposed to environmental challenges. The serrated locking mechanism creates permanent resistance to rotational loosening caused by vibration and thermal cycling, eliminating the need for secondary locking devices. Combined with the external hex drive and coarse UNC threads, this flange nut enables rapid installation in high-volume production environments while the integrated flange distributes clamping pressure across wider surfaces, preventing damage to softer materials and reducing maintenance requirements in automotive, construction, and manufacturing applications.

Specification Summary & Compliance

This flange lock nut features 7/8"-9 UNC coarse threads with Class 2B thread fit for consistent engagement and reliable performance. The right-hand threaded fastener maintains 1-11/16" flange diameter with 0.11" thickness for optimal load distribution. Manufactured to industry standards, this component is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations, ensuring safe use across various industrial sectors while meeting quality and sustainability requirements.