S-90630A116 7/8"-14 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking technology that maintains secure fastening in high-motion environments
• Exceptional strength performance with Grade 8 steel construction capable of withstanding heavy-duty mechanical loads
• Precise thread engagement thanks to Class 2B thread fit ensuring consistent, reliable connections in assembly operations
• High-temperature capability with nylon insert rated to 220°F for stable performance in heated industrial applications
• Optimized torque transmission through standard 1-1/4" external hex profile for easy installation with common tools
• Fine thread advantage with 7/8"-14 UNF specification providing enhanced adjustment precision and load distribution
• Environmental compliance assurance meeting both REACH and RoHS 3 standards for safe industrial usage

Professional Applications & Engineering Value

This Grade 8 steel nylon insert locknut delivers critical vibration resistance in demanding industrial environments where constant motion threatens fastener integrity. The 7/8"-14 UNF fine threads with Class 2B fit provide exceptional clamping force distribution while maintaining precise alignment in heavy machinery, automotive assemblies, and structural applications. The nylon insert locking mechanism creates consistent friction that prevents loosening under extreme vibration, eliminating the need for secondary locking devices and reducing maintenance cycles. With a 220°F maximum temperature rating, this external hex drive locknut performs reliably in engine compartments, industrial equipment, and manufacturing systems where thermal cycling occurs. The standard hex profile ensures compatibility with conventional wrenching tools, streamlining installation processes across diverse industrial settings.

Specification Summary & Compliance

This locknut features precision 7/8"-14 UNF fine threads with Class 2B thread fit for consistent engagement and reliable performance. Manufactured from high-strength Grade 8 steel with a standard 1-1/4" hex profile and external hex drive configuration. The product maintains full compliance with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, ensuring environmental responsibility in industrial applications. The locking mechanism utilizes a nylon insert rated for continuous service up to 220°F, providing dependable vibration resistance while meeting industry standards for quality and safety.