S-90630A114 7/8"-9 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking technology that maintains secure fastening under extreme conditions
• Exceptional strength and durability with Grade 8 steel construction for heavy-duty industrial applications
• Reliable high-temperature performance with nylon inserts rated up to 220°F for demanding environments
• Precise thread engagement with UNC coarse threads and Class 2B fit ensuring consistent, reliable connections
• Easy installation and removal with standard 1 1/4" external hex drive for standard tool compatibility
• Comprehensive regulatory compliance meeting REACH and RoHS 3 standards for industrial safety requirements
• Optimized dimensional design with 63/64" height providing balanced profile for space-constrained applications

Professional Applications & Engineering Value

This Grade 8 steel nylon insert locknut delivers exceptional engineering value in high-vibration environments where fastener integrity is critical. The 7/8"-9 UNC coarse thread configuration provides superior engagement in demanding applications, while the nylon insert locking mechanism maintains consistent clamping force without compromising the Class 2B thread fit. Engineered for heavy machinery, automotive assemblies, and industrial equipment, this external hex locknut solves common vibration-induced loosening problems. The 220°F rated nylon insert ensures reliable performance in elevated temperature conditions, making it ideal for engine components, powertrain systems, and manufacturing equipment where thermal cycling occurs. The robust 1 1/4" hex drive accommodates standard tools for efficient installation and maintenance procedures.

Specification Summary & Compliance

This locknut features precision UNC coarse threads (7/8"-9) with Class 2B thread fit for optimal engagement and consistent performance. Manufactured from high-strength Grade 8 steel with dimensions of 1 1/4" width and 63/64" height. The product is fully compliant with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, ensuring adherence to current industrial safety and environmental standards. The locking mechanism utilizes a nylon insert rated for temperatures up to 220°F, providing reliable vibration resistance while maintaining thread integrity.