S-90949A222 5/8"-18 Flange Nuts
Flange Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Flange Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Vibration-resistant locking through distorted thread design prevents loosening in high-stress environments
- Enhanced corrosion protection with zinc yellow-chromate plating extends service life in demanding conditions
- Integrated flange design eliminates need for separate washers and distributes load over wider surface area
- Grade G strength classification ensures reliable performance in heavy-duty industrial applications
- Fine UNF thread profile provides superior clamping force and resistance to vibrational loosening
- Class 2B thread fit guarantees precise engagement and consistent torque performance
- Standard external hex drive enables easy installation with common wrench tools
Professional Applications & Engineering Value
This Grade G flange locknut with distorted thread technology addresses critical vibration-induced failure points in industrial machinery, automotive assemblies, and structural frameworks. The zinc yellow-chromate plated steel construction provides exceptional corrosion resistance while maintaining the mechanical properties required for permanent fastening solutions. The integrated flange design (1 21/64" diameter) serves as a built-in washer, distributing clamping force effectively and preventing surface damage. With 5/8"-18 UNF fine threads and Class 2B fit, this locknut delivers precise thread engagement that maintains tension under dynamic loads, making it ideal for applications where reliability cannot be compromised.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2B thread fit and UNF thread specifications. Features 5/8"-18 fine threads with right-hand orientation and external hex drive (15/16" width). The zinc yellow-chromate plating provides corrosion protection while maintaining compliance with industrial fastener standards. Meets Grade G mechanical properties and is suitable for applications requiring reliable, permanent fastening solutions in demanding environments.
