S-92501A503 5/16"-18 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through distorted thread top lock design that maintains secure fastening in high-stress environments
• Exceptional durability with ASTM Grade C steel construction ensuring reliable performance in demanding industrial applications
• Precision thread engagement with Class 2B fit providing consistent, reliable clamping force and reduced installation torque variation
• Easy installation and removal using standard external hex drive compatible with common wrenching tools
• Environmental compliance assurance meeting both REACH and RoHS 3 standards for safe industrial use
• Optimized coarse thread design with 5/16"-18 UNC threads enabling faster assembly and reduced cross-threading risks
• Right-hand thread compatibility with standard fastening systems for seamless integration into existing assemblies

Professional Applications & Engineering Value

This 5/16"-18 UNC steel locknut with distorted thread top lock technology addresses critical vibration-induced loosening challenges in industrial environments. The engineered distortion in the upper threads creates controlled interference that resists rotational movement under dynamic loads, making it ideal for machinery, automotive, and heavy equipment applications where vibration resistance is paramount. The ASTM Grade C material specification ensures consistent mechanical properties and corrosion resistance, while the Class 2B thread fit guarantees precise engagement with mating components. The external hex drive design facilitates efficient installation using standard tools, reducing assembly time and labor costs in production environments where reliability cannot be compromised.

Specification Summary & Compliance

This locknut features 5/16"-18 UNC coarse threads with Class 2B thread fit tolerance, ensuring precise dimensional accuracy and reliable mating with corresponding fasteners. Manufactured to ASTM Grade C specifications for consistent mechanical performance, the nut measures 1/2" across flats with 17/64" height. The product is fully compliant with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, meeting current industrial safety and environmental standards for hazardous substance restrictions.