S-92865A583 5/16"-18 x 1" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 120,000 PSI tensile strength for reliable performance in demanding applications
• Superior corrosion resistance through zinc plating, extending service life in harsh industrial environments
• Optimized thread engagement with UNC coarse spacing and Class 2A fit for faster assembly and secure fastening
• Enhanced durability with Rockwell C25 hardness, maintaining structural integrity under repeated stress
• Maximum thread coverage through full threading along the 1" length for superior grip and distribution of clamping forces
• Easy installation and removal with external hex drive design, compatible with standard wrenching tools
• Industry-standard compatibility meeting ASME B18.2.1 and SAE J429 specifications for consistent performance

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 5 steel hex head screw delivers exceptional mechanical properties where reliability is paramount. The 5/16"-18 UNC coarse thread configuration provides superior resistance to vibration loosening while enabling rapid installation in structural steel assemblies, machinery frames, and equipment mounting systems. The zinc plated finish creates a protective barrier against oxidation and chemical exposure in manufacturing facilities, automotive applications, and construction projects. With fully threaded design and Class 2A thread fit, these hex head screws ensure consistent clamping force distribution across the entire engagement length, preventing joint failure in high-stress environments while maintaining dimensional accuracy per industry standards.

Specification Summary & Compliance

This 1" length hex head screw features precise Class 2A thread fit with UNC coarse thread spacing (18 TPI) and right-hand thread direction. Manufactured to exacting ASME B18.2.1 and SAE J429 Grade 5 specifications, ensuring dimensional consistency and mechanical performance. Compliant with RoHS 3 (2015/863/EU) for restricted substance control and REACH (EC 1907/2006) regulations for chemical safety, making these fasteners suitable for global industrial supply chains and environmentally conscious manufacturing operations.