S-98694A145 7/8"-9 Square Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in harsh industrial environments
• Heavy-duty load capacity from Grade 5 strength rating, ensuring reliable performance under high-stress conditions
• Quick installation and removal with external square drive design that provides excellent tool engagement and torque transmission
• Secure thread engagement through Class 2B thread fit, minimizing the risk of loosening in vibrating applications
• Enhanced compatibility with 7/8"-9 UNC coarse threading, making it ideal for general industrial assembly and maintenance
• Environmental compliance with RoHS 3 and REACH regulations, meeting international safety and sustainability standards
• Optimal dimensional stability with precise 1 5/16" width and 49/64" height for consistent performance across applications

Professional Applications & Engineering Value

This Grade 5 square nut delivers exceptional engineering value through its robust zinc-plated steel construction, specifically designed to address common industrial challenges. The 7/8"-9 UNC coarse thread configuration ensures rapid assembly in heavy machinery, structural steel frameworks, and equipment maintenance where vibration resistance is critical. The external square drive enables superior torque application compared to standard hex nuts, preventing tool slippage in high-torque scenarios. This combination of Class 2B thread fit and right-hand threading provides reliable fastening in construction equipment, agricultural machinery, and industrial conveyors where loosening under dynamic loads poses significant operational risks. The corrosion-resistant zinc plating extends service life in outdoor or chemically aggressive environments, reducing maintenance frequency and replacement costs.

Specification Summary & Compliance

This heavy-duty square nut features precise UNC coarse threading with Class 2B thread fit tolerance for optimal engagement with mating components. Manufactured to Grade 5 strength specifications with dimensions of 1 5/16" width and 49/64" height, ensuring consistent performance across industrial applications. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety standards for industrial components.