S-90949A215 5/16"-24 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through distorted thread locking technology that maintains clamp force in high-stress environments
• Enhanced corrosion protection with zinc yellow-chromate plating that withstands harsh industrial conditions
• High-strength performance meeting Grade G specifications for demanding applications requiring reliable fastening
• Integrated flange design eliminates need for separate washers while providing 11/16" bearing surface for better load distribution
• Precision fine threading with 5/16"-24 UNF Class 2B fit ensures smooth engagement and consistent clamping performance
• Standard external hex drive allows for easy installation with common tools while the 1/2" width provides excellent torque transmission
• Right-hand threading compatibility with standard UNF fastening systems for seamless integration into existing assemblies

Professional Applications & Engineering Value

This Grade G flange locknut combines distorted thread locking technology with zinc yellow-chromate plating to solve critical industrial fastening challenges. The engineered distortion in the upper threads creates consistent prevailing torque that resists loosening under vibration and dynamic loads, making it ideal for heavy machinery, automotive assemblies, and industrial equipment where reliability is paramount. The integrated 11/16" flange diameter distributes clamping force over a wider area, reducing surface pressure and preventing damage to connected components. Manufactured from high-strength steel and featuring 5/16"-24 UNF fine threading with Class 2B fit, this locknut delivers precise engagement and maintains structural integrity in the most demanding applications while the corrosion-resistant plating ensures long-term performance in challenging environments.

Specification Summary & Compliance

This flange locknut features 5/16"-24 UNF fine threads with Class 2B thread fit for precision engagement, manufactured to meet Grade G strength requirements. The product complies with UNF thread standards and features an 11/16" flange diameter with 0.05" flange thickness for optimal load distribution. The zinc yellow-chromate plating provides corrosion resistance while meeting industry standards for surface treatments. The external hex drive style (1/2" width) and right-hand thread direction ensure compatibility with standard industrial fastening systems and installation tools.