S-92865A918 1"-8 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 harsh industrial environments
• Optimized installation efficiency with UNC coarse threading and Class 2A fit for faster assembly and reduced cross-threading risks
• Enhanced torque transmission via external hex drive design, providing secure fastening with standard tools
• Consistent mechanical properties maintained through Rockwell C25 hardness, ensuring dimensional stability under stress
• Full-thread engagement capability along the 3½" length, offering maximum grip strength across joined materials
• Regulatory compliance assurance meeting ASME B18.2.1 and RoHS 3 standards for quality and environmental safety

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 5 hex head screws deliver critical performance where structural integrity matters most. The zinc plated steel construction provides essential corrosion protection in manufacturing facilities, construction sites, and machinery assembly. The 1"-8 UNC coarse thread configuration ensures rapid installation while maintaining holding power in steel frameworks, equipment bases, and structural connections. With fully threaded design and external hex drive, these fasteners eliminate the need for precise hole depth measurement while allowing high-torque installation. The combination of 120,000 psi tensile strength and Rockwell C25 hardness makes these screws ideal for applications subject to vibration, dynamic loads, and thermal cycling, providing engineers with a reliable solution for critical joints.

Specification Summary & Compliance

This 1"-8 UNC hex head screw features Class 2A thread fit tolerances per ASME standards, ensuring consistent threading quality and interchangeability. Manufacturing complies with ASME B18.2.1 and SAE J429 Grade 5 specifications, guaranteeing mechanical properties and dimensional accuracy. The product is RoHS 3 (2015/863/EU) Compliant, meeting environmental regulations for hazardous substance restrictions. With right-hand thread direction and coarse thread spacing, these fasteners provide optimal performance in standard industrial applications where reliability and regulatory compliance are essential.