S-92865A105 5/16"-24 x 3/4" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior load-bearing capability with 120,000 PSI tensile strength for reliable performance in high-stress applications
• Enhanced corrosion resistance through zinc plating, extending service life in demanding environments
• Precise thread engagement with Class 2A fit and UNF fine threading for secure fastening and vibration resistance
• Exceptional durability from Grade 5 steel construction with Rockwell C25 hardness for long-term reliability
• Optimized installation efficiency with external hex drive design allowing high torque application
• Full thread coverage across the 3/4" length for maximum grip and distribution of clamping forces
• Regulatory compliance assurance meeting ASME, SAE, RoHS 3, and REACH standards for quality and safety

Professional Applications & Engineering Value

This Grade 5 steel hex head screw with 5/16"-24 UNF fine threading delivers critical performance advantages for industrial assemblies requiring precision fastening. The combination of 120,000 PSI tensile strength and Rockwell C25 hardness ensures reliable operation in high-vibration environments where fastener failure is not an option. The zinc plated finish provides essential corrosion protection for applications exposed to moisture or harsh conditions. With its external hex drive and Class 2A thread fit, this fully threaded fastener enables quick installation while maintaining precise tolerances in machinery, automotive components, and structural assemblies where fine thread spacing prevents loosening under dynamic loads.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit tolerances per UNF standards with 5/16"-24 fine thread spacing. Manufacturing complies with ASME B18.2.1 and SAE J429 Grade 5 specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial sectors.