S-90949A233 5/8"-11 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through distorted thread locking technology that maintains clamping force in high-stress applications
• Enhanced load distribution with 1-21/64" flange diameter that reduces surface pressure and prevents material damage
• Exceptional durability provided by Grade G black-oxide steel construction offering reliable performance in demanding environments
• Quick installation and removal with standard external hex profile that accommodates common wrenching tools
• Precise thread engagement ensured by Class 2B thread fit for consistent performance and reduced cross-threading risks
• Environmental compliance meeting both REACH and RoHS 3 standards for safe use in regulated industries
• Optimized for coarse thread applications with 5/8"-11 UNC threading that provides excellent holding power in various materials

Professional Applications & Engineering Value

This Grade G flange lock nut delivers critical engineering solutions for industrial applications where vibration-induced loosening compromises safety and performance. The distorted thread locking technology creates consistent interference fit throughout the engagement area, eliminating the need for additional locking components while maintaining vibration resistance under extreme conditions. The integrated 1-21/64" flange acts as a built-in washer, distributing clamp load over a wider surface area to prevent damage to assembled materials. Manufactured from black-oxide steel with UNC coarse threading, this fastener excels in heavy machinery, construction equipment, automotive assemblies, and structural applications where reliability cannot be compromised. The external hex drive ensures straightforward installation with standard tools, reducing assembly time while providing the security demanded by critical connections.

Specification Summary & Compliance

This flange lock nut features 5/8"-11 UNC coarse threading with Class 2B thread fit for consistent engagement and reliable performance. The manufacturing complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards, ensuring regulatory compliance for industrial applications. The Grade G material classification guarantees mechanical properties suitable for demanding applications, while the right-hand thread direction and standard hex profile provide compatibility with common installation tools and procedures.