S-90949A127 7/8"-14 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through distorted thread locking technology, preventing loosening in high-stress environments
• Enhanced load distribution with 1 3/4" flange diameter, reducing surface pressure and material fatigue
• Exceptional durability with Grade G strength classification, ensuring reliable performance under heavy loads
• Corrosion protection from black-phosphate steel coating, extending service life in harsh industrial conditions
• Precise thread engagement with Class 2B UNF fine threads, providing secure fastening and reduced cross-threading risk
• Easy installation using standard external hex drive, compatible with common industrial tools
• Environmental compliance with RoHS 3 standards, meeting international safety regulations

Professional Applications & Engineering Value

This Grade G flange locknut delivers critical vibration resistance where standard fasteners fail. The distorted thread locking mechanism creates permanent friction that counters rotational forces in heavy machinery, construction equipment, and automotive assemblies. Manufactured from black-phosphate steel, it provides superior corrosion resistance while maintaining Grade G strength specifications. The integrated 1 3/4" flange distributes clamping force across wider surfaces, preventing damage to connected materials. With 7/8"-14 UNF fine threads and Class 2B fit, this heavy-duty hex nut ensures precise alignment and reliable performance in high-vibration applications where safety and durability are paramount.

Specification Summary & Compliance

This flange locknut features 7/8"-14 UNF fine threads with Class 2B thread fit for precise manufacturing tolerances. The right-hand thread direction and external hex drive comply with standard industrial practices. Manufacturing meets Grade G strength classification requirements, while the product maintains full RoHS 3 (2015/863/EU) compliance for environmental safety. The combination of distorted thread locking technology and heavy-duty construction ensures reliable performance according to industrial fastener standards.