S-90670A185 5/8"-18 ASME B18.2.2 Hex Nuts
Hex Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance from 6061 Aluminum construction, ensuring long-term reliability in harsh industrial environments
- Precise Class 2B thread fit guarantees smooth assembly and secure fastening with minimal risk of cross-threading
- Fine UNF threading (5/8"-18) provides enhanced vibration resistance and superior load distribution compared to coarse threads
- Full ASME B18.2.2 compliance ensures dimensional accuracy and interchangeability with standard components
- Environmental regulation compliance with RoHS 3 and REACH standards for safe global industrial applications
- Standard external hex design allows for easy installation with common wrench tools, reducing assembly time
- Right-hand threading compatibility with standard rotation direction for intuitive installation processes
Professional Applications & Engineering Value
This 5/8"-18 UNF fine thread hex nut delivers exceptional engineering value through its 6061 Aluminum composition and precision manufacturing. The fine thread configuration specifically addresses vibration-related loosening in dynamic applications such as automotive assemblies, aerospace components, and precision machinery. The Class 2B thread fit ensures consistent engagement with mating bolts while maintaining dimensional stability under thermal cycling conditions. The external hex drive style provides reliable torque transmission during installation, making these nuts ideal for maintenance operations and production line applications where tool accessibility varies. The corrosion-resistant properties of aluminum make these fasteners suitable for outdoor equipment, marine environments, and chemical processing facilities where moisture resistance is critical.
Specification Summary & Compliance
This hex nut features precise Class 2B thread fit with 5/8"-18 UNF fine threading and right-hand thread direction. Manufactured to ASME B18.2.2 specifications with standard external hex profile measuring 15/16" width and 35/64" height. The component is fully compliant with RoHS 3 (2015/863/EU) with exemption 6(b)-II and REACH (EC 1907/2006) regulations regarding substance restrictions, ensuring environmental responsibility in industrial applications.
