S-94705A797 1 1/8"-8 x 2 1/2" ASTM A193 Steel Heavy Hex Head Screws for High-Pressure Applications

Key Features & Benefits at a Glance

• Exceptional tensile strength of 125,000 PSI ensures reliable performance in high-stress industrial applications
• Premium Grade B7 steel construction delivers superior durability and resistance to mechanical stress
• Rockwell C35 hardness rating provides excellent wear resistance and long-term fastener integrity
• Class 2A thread fit offers optimal assembly precision while maintaining easy installation
• Fully threaded design maximizes grip strength and load distribution across the entire fastener length
• External hex drive configuration enables secure tool engagement and high torque application
• ASTM A193 compliance guarantees material quality and performance standards for critical applications

Professional Applications & Engineering Value

This high-strength hex head screw is engineered to address the most demanding industrial challenges where fastener failure is not an option. The combination of Grade B7 steel material and UN fine threading creates an optimal solution for high-pressure environments, pressure vessel systems, and structural applications requiring precise clamping force. The fully threaded design ensures maximum engagement in thick materials, while the external hex drive accommodates standard industrial tools for efficient installation and maintenance. With its 1 1/8"-8 thread specification and robust construction, this fastener delivers reliable performance in petrochemical, power generation, and heavy machinery applications where thermal cycling and mechanical stress are constant concerns.

Specification Summary & Compliance

This heavy-duty fastener features precise Class 2A thread fit tolerances according to UN standards, ensuring consistent mating with corresponding nuts and threaded components. The 2 1/2" length and 1 1/8"-8 fine thread configuration provide optimal engagement characteristics for various material thicknesses. Manufactured in compliance with ASTM A193 specifications for high-temperature service, this hex head screw maintains dimensional accuracy and mechanical properties under extreme conditions. The product meets industry standards for material composition and mechanical performance, making it suitable for critical applications requiring verified compliance and traceability.