S-92865A893 7/8"-9 x 5" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 psi ensures reliable performance under heavy loads, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance from zinc plating extends service life and maintains integrity in harsh industrial environments.
• High-strength Grade 5 classification with Rockwell C25 hardness provides excellent durability and resistance to wear and deformation.
• Coarse UNC thread design offers faster installation and superior holding power in a wide range of materials.
• Full threading along the 5" length allows for maximum adjustability and secure fastening in deep applications.
• External hex drive with substantial head dimensions enables high torque application and easy installation with standard tools.
• Compliance with major industry standards including ASME B18.2.1 and RoHS 3 ensures quality, safety, and environmental responsibility.

Professional Applications & Engineering Value

This Grade 5 hex head screw delivers exceptional engineering value for heavy-duty industrial applications where reliability is paramount. The zinc plated steel construction provides critical corrosion protection in manufacturing facilities, construction sites, and outdoor equipment. The 7/8"-9 UNC coarse thread configuration ensures rapid installation and superior vibration resistance in structural assemblies, machinery frames, and load-bearing connections. With fully threaded design and external hex drive, this fastener solves common installation challenges by allowing deep penetration and enabling high torque application without stripping. The combination of 120,000 psi tensile strength and Rockwell C25 hardness makes it ideal for applications requiring repeated disassembly and reassembly without compromising fastener integrity.

Specification Summary & Compliance

This heavy-duty hex head screw features precise Class 2A thread fit tolerance for consistent performance and easy assembly. Manufacturing complies with ASME B18.2.1 specifications where identical to SAE J429 Grade 5 requirements, ensuring dimensional accuracy and mechanical properties. The product meets RoHS 3 (2015/863/EU) compliance for environmental safety and contains no restricted hazardous substances. The inch system measurement, right-hand thread direction, and UNC thread type with coarse spacing provide standardized compatibility across industrial applications.