S-92865A887 7/8"-9 x 3 1/2" 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 various industrial environments
• Optimized thread engagement with UNC coarse threading and Class 2A fit for faster assembly and secure fastening
• High-grade material strength meeting Grade 5 specifications with Rockwell C25 hardness for consistent durability
• Maximum thread utilization through full threading along the 3½" length for enhanced grip and distribution of stress
• Industry-standard compatibility with external hex drive design conforming to ASME B18.2.1 and SAE J429 specifications
• Environmental compliance assurance with RoHS 3 adherence for safe use in regulated applications

Professional Applications & Engineering Value

This Grade 5 hex head screw delivers critical engineering solutions where high tensile strength and reliable fastening are paramount. The zinc plated steel construction provides essential corrosion protection for industrial equipment, structural assemblies, and machinery subjected to harsh operating conditions. The 7/8"-9 UNC coarse thread design ensures rapid installation and superior resistance to vibration loosening in heavy-duty applications. With full threading along its entire 3½" length, this fastener maximizes contact surface area for enhanced load distribution and joint integrity. The external hex drive configuration allows for high-torque installation using standard tools, making it ideal for construction, manufacturing, and maintenance operations requiring ASME B18.2.1 compliant fasteners with proven performance characteristics.

Specification Summary & Compliance

This hex head screw features precision Class 2A thread fit tolerances with right-hand UNC coarse threading (7/8"-9) and full threading along the 3½" length. Manufactured to meet ASME B18.2.1 specifications where identified with SAE J429 Grade 5 requirements, ensuring consistent dimensional accuracy and mechanical properties. The fastener is RoHS 3 (2015/863/EU) Compliant for environmental safety and regulatory adherence in industrial applications.