S-90767A112 5/16"-18 Cap Nuts

Key Features & Benefits at a Glance

• Exceptional strength for demanding applications - Grade 8 classification ensures reliable performance in high-stress industrial environments
• Superior corrosion protection - Black corrosion-resistant coating extends service life in harsh conditions and outdoor applications
• Precise thread engagement - Class 2B thread fit provides consistent, reliable fastening with reduced risk of cross-threading
• Optimal torque transmission - External hex drive design allows for secure tool engagement and efficient installation
• Enhanced safety and protection - Cap nut design covers exposed threads, preventing snagging and protecting against contaminants
• Industry-standard compatibility - 5/16"-18 UNC coarse thread pattern ensures broad compatibility with standard industrial components
• Regulatory compliance assurance - RoHS 3 compliance meets environmental standards while maintaining performance requirements

Professional Applications & Engineering Value

This Grade 8 cap nut delivers critical engineering solutions where corrosion resistance and maximum strength are paramount. The corrosion-resistant coated steel construction with black finish provides essential protection against rust and degradation in demanding environments including outdoor machinery, construction equipment, and marine applications. The 5/16"-18 UNC coarse thread pattern ensures rapid installation and reliable performance in high-vibration settings, while the external hex drive facilitates efficient assembly with standard tools. The cap nut design eliminates exposed thread hazards and prevents contamination ingress, making it ideal for applications where safety and cleanliness are critical concerns in industrial manufacturing and heavy equipment maintenance.

Specification Summary & Compliance

This heavy-duty fastener features precise Class 2B thread fit with 5/16"-18 UNC coarse thread specifications, ensuring dimensional accuracy and reliable performance. Manufactured to meet Grade 8 strength requirements for maximum load-bearing capacity. The product is fully RoHS 3 (2015/863/EU) compliant with exemption 6(a) for lead as an alloying element in steel, meeting international environmental standards while maintaining mechanical properties. Dimensions include 1/2" width and 17/32" height for consistent installation and compatibility with standard industrial applications.