S-90648A245 7/8"-9 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance with nylon insert technology that maintains locking performance even under dynamic loads
• Enhanced torque application thanks to the extra wide hex profile that provides better tool engagement and reduces slipping
• Reliable thread compatibility with Class 2B thread fit ensuring consistent engagement with mating components
• Durable corrosion protection through zinc-plated steel construction for extended service life in industrial environments
• High-temperature performance with nylon insert rated for continuous operation up to 250°F (121°C)
• Easy installation and removal with standard external hex drive compatible with common wrenching tools
• Optimized for coarse thread applications using UNC 7/8"-9 threads for faster assembly in demanding conditions

Professional Applications & Engineering Value

This heavy-duty nylon insert locknut delivers critical vibration resistance in demanding industrial applications where secure fastening is paramount. The zinc-plated steel construction provides excellent corrosion protection while maintaining structural integrity under stress. Engineered with an extra wide hex profile, this locknut enables higher torque application without damaging the fastener, making it ideal for machinery, equipment assembly, and structural applications where vibration loosening is a concern. The nylon insert technology creates consistent locking force while allowing for multiple reuses, providing cost-effective security for UNC coarse thread assemblies in manufacturing, construction, and heavy equipment sectors where reliability cannot be compromised.

Specification Summary & Compliance

This locknut features 7/8"-9 UNC coarse threads with Class 2B thread fit for precise dimensional accuracy and reliable mating. The external hex drive measures 1 7/16" width with a 1 1/8" height profile. Manufactured to industry standards for nylon insert locknuts, this component is suitable for applications requiring vibration resistance up to 250°F maximum temperature. The zinc-plated steel construction meets industrial fastener specifications and provides corrosion protection for extended service life in various operating environments.