S-90670A261 5/8"-24 ASME B18.2.2 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance from 6061 aluminum construction, ideal for harsh environments and outdoor applications
• Exceptional vibration resistance due to UNEF extra fine threading, maintaining secure connections in high-vibration machinery
• Precise thread engagement with Class 2B fit ensuring reliable, consistent performance in critical assemblies
• Industry-standard compliance with ASME B18.2.2 specifications for guaranteed dimensional accuracy and interchangeability
• Environmental responsibility through full REACH and RoHS 3 compliance, meeting modern regulatory requirements
• Optimized weight-to-strength ratio providing durable fastening while reducing overall assembly weight
• Standard external hex drive design for easy installation with common tools and uniform torque application

Professional Applications & Engineering Value

This 5/8"-24 UNEF extra fine thread hex nut delivers critical engineering solutions where precision and reliability are paramount. Manufactured from 6061 aluminum, it provides excellent corrosion resistance while significantly reducing component weight compared to steel alternatives. The extra fine threading offers superior resistance to loosening under vibration, making it ideal for aerospace components, precision instruments, and high-performance machinery where minute adjustments and secure fastening are essential. The Class 2B thread fit ensures consistent engagement with mating components, while compliance with ASME B18.2.2 standards guarantees dimensional accuracy across production batches. This combination of material properties and precision engineering addresses common industrial challenges of weight reduction, corrosion management, and vibration-induced fastener failure.

Specification Summary & Compliance

This hex nut features 5/8"-24 UNEF extra fine threads with Class 2B thread fit for precision engagement, manufactured to ASME B18.2.2 specifications ensuring dimensional accuracy and interchangeability. The component maintains compliance with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) standards with exemption 6(b)-II for lead as an alloying element in aluminum. With right-hand thread direction and standard external hex drive configuration, this fastener delivers reliable performance while meeting current environmental and industrial regulatory requirements.