S-90715A045 7/8"-9 Locknuts

Key Features & Benefits at a Glance

• Superior Vibration Resistance - Nylon insert locking mechanism maintains consistent clamping force under dynamic loads, preventing loosening in high-vibration industrial environments
• Exceptional Corrosion Performance - 316 stainless steel construction provides excellent resistance to chemicals, saltwater, and industrial atmospheres for long-term reliability
• High-Temperature Capability - Withstands continuous service temperatures up to 220°F, making it suitable for demanding thermal applications
• Precision Thread Engagement - Class 2B thread fit ensures smooth installation and reliable performance with standard UNC male threads
• Easy Installation & Removal - Standard external hex drive design allows for conventional wrenching and torque application
• Regulatory Compliance Assurance - Meets RoHS 3 and REACH environmental standards for global industrial applications
• Optimized Mechanical Strength - Coarse UNC thread profile combined with standard hex profile delivers reliable performance in heavy-duty assemblies

Professional Applications & Engineering Value

This 7/8"-9 UNC nylon insert locknut delivers critical vibration resistance where traditional fasteners fail. The 316 stainless steel construction addresses corrosion challenges in chemical processing, marine, and food industry applications, while the nylon insert locking technology maintains clamp load integrity under continuous vibration and thermal cycling. The coarse thread profile enables rapid installation in production environments and provides superior performance in materials where fine threads might strip or gall. With its 220°F temperature rating and external hex drive, this locknut solves assembly reliability issues in machinery, structural frameworks, and equipment subjected to dynamic loads and harsh operating conditions.

Specification Summary & Compliance

This locknut features 7/8"-9 UNC coarse threads with Class 2B thread fit tolerance for precise mating with standard male fasteners. The dimensional specifications include 1 1/4" width across flats and 63/64" height for standard wrench clearance. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental compliance for industrial and international applications. The right-hand thread direction follows industry standards for consistent installation practices.