S-92501A523 5/16"-18 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through distorted thread top lock technology that maintains secure fastening under dynamic loads
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in harsh industrial environments
• Reliable thread engagement with Class 2B thread fit ensuring consistent performance and easy installation
• High-strength performance meeting ASTM Grade C specifications for demanding applications
• Quick installation and removal with standard external hex drive design compatible with common tools
• Optimal material compatibility using coarse UNC threads (5/16"-18) for superior grip in various materials
• Environmental compliance assurance with REACH and RoHS 3 certifications for global regulatory requirements

Professional Applications & Engineering Value

This 5/16"-18 UNC zinc-plated steel locknut addresses critical vibration-induced loosening challenges in industrial machinery, automotive assemblies, and structural frameworks. The distorted thread top lock mechanism creates permanent friction resistance without requiring additional locking components, simplifying inventory and installation processes. Manufactured from ASTM Grade C steel with zinc plating, it provides excellent corrosion resistance while maintaining consistent Class 2B thread fit for reliable performance in high-vibration environments. The external hex drive style ensures compatibility with standard wrenching tools, reducing installation time and labor costs in production and maintenance operations.

Specification Summary & Compliance

This heavy-duty locknut features 5/16"-18 UNC coarse threads with Class 2B thread fit tolerance, ensuring precise engagement with mating components. The distorted thread top lock design provides permanent vibration resistance without compromising thread integrity. Manufactured to ASTM Grade C strength specifications, it delivers consistent mechanical performance. The product is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations, meeting international standards for industrial fastener applications. Dimensions include 1/2" width across flats and 17/64" height for standardized installation requirements.