S-92501A509 1/2"-13 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through distorted top lock thread technology that maintains secure fastening under dynamic loads
• Exceptional strength and durability with ASTM Grade C steel construction for heavy-duty industrial applications
• Reliable coarse thread engagement with 1/2"-13 UNC threads and Class 2B fit for quick installation and consistent performance
• Easy installation and removal using standard external hex drive with 3/4" width for common wrench compatibility
• Environmental compliance assurance meeting both REACH and RoHS 3 standards for safe industrial use
• Optimized dimensional design with 7/16" height providing space efficiency without compromising locking performance
• Right-hand thread configuration ensuring compatibility with standard industrial equipment and fastening systems

Professional Applications & Engineering Value

This heavy-duty steel locknut addresses critical vibration-induced loosening challenges in industrial machinery, construction equipment, and automotive assemblies. The distorted top lock thread technology creates consistent interference along the mating surface, providing permanent locking action without requiring additional locking components. Manufactured from ASTM Grade C steel, this external hex locknut delivers reliable performance in high-stress environments where vibration and dynamic loads compromise standard fasteners. The 1/2"-13 UNC coarse thread configuration ensures rapid installation while maintaining Class 2B thread fit precision for consistent torque values and clamping force retention. Ideal for maintenance-critical applications where fastener failure could lead to equipment downtime or safety hazards.

Specification Summary & Compliance

This locknut features 1/2"-13 UNC coarse threads with Class 2B thread fit tolerance for precise engagement. The external hex drive measures 3/4" across flats with a 7/16" height profile. Manufactured to ASTM Grade C strength standards with distorted top lock thread locking mechanism and right-hand thread direction. Compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations for industrial safety requirements.