S-92865A182 5/8"-11 x 5 1/4" 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 provided by zinc plating, extending service life in harsh industrial environments
• Optimized thread engagement through 5/8"-11 UNC coarse threading and Class 2A fit ensures secure fastening and vibration resistance
• High-strength material specification meeting Grade 5 standards with Rockwell C25 hardness for consistent mechanical properties
• Enhanced installation efficiency with external hex drive and 15/16" head width for easy tool access and high torque application
• Versatile partial threading design allows for both clamping and alignment functions in structural assemblies
• Regulatory compliance assurance with RoHS 3 and REACH standards for environmentally responsible manufacturing

Professional Applications & Engineering Value

This Grade 5 hex head screw delivers critical engineering solutions for heavy-duty industrial applications where structural integrity is paramount. The zinc plated steel construction provides essential corrosion protection in manufacturing facilities, construction sites, and outdoor equipment assemblies. The 5/8"-11 UNC coarse thread configuration ensures rapid installation and superior resistance to vibration loosening in machinery, structural steel connections, and transportation equipment. With partial threading and 5-1/4" length, this fastener accommodates both thick material sections and precise joint alignment requirements. The external hex drive design facilitates high-torque installation using standard tools, reducing assembly time while maintaining the 120,000 PSI tensile strength necessary for critical load-bearing applications across multiple industrial sectors.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance for consistent performance. Complies with ASME B18.2.1 and SAE J429 specifications for Grade 5 hex head screws. Meets regulatory requirements including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance. Features 5/8"-11 UNC coarse threads with right-hand direction and 1-1/2" minimum thread length on a 5-1/4" overall length configuration.