S-92790A641 5/8"-11 x 5 1/2" ASTM A193 Super-Corrosion-Resistant 316 Stainless Steel Heavy Hex Head Screws for High-Pressure Applications

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 316 Stainless Steel construction, ideal for harsh chemical and marine environments
• Superior mechanical strength delivering 75,000 psi tensile strength and Rockwell B96 hardness for reliable load-bearing performance
• Precision thread engagement with Class 2A fit and UNC coarse threading ensuring secure, vibration-resistant connections
• Optimized load distribution through the 4" grip length and partially threaded design for enhanced joint stability
• Heavy-duty compatibility meeting ASTM A193 Grade B8M specifications for high-pressure and high-temperature applications
• Efficient installation with external hex drive and 1-1/16" head width allowing high torque application with standard tools
• Long-term durability maintaining structural integrity under sustained mechanical stress and corrosive conditions

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this 5/8"-11 UNC hex head screw solves critical fastening challenges in chemical processing, marine equipment, and high-temperature systems. The 316 Stainless Steel composition provides superior pitting resistance against chlorides and acidic environments, while the partially threaded design concentrates clamping force precisely where needed. The coarse UNC threads and Class 2A thread fit prevent cross-threading during assembly and maintain connection integrity under vibration. With ASTM A193 Grade B8M certification, this fastener delivers reliable performance in pressure vessel flanges, pump assemblies, and structural connections where corrosion resistance and mechanical strength are paramount.

Specification Summary & Compliance

This inch-system fastener features precision 5/8"-11 UNC coarse threads with Class 2A thread fit tolerance for consistent engagement. Manufacturing complies with ASTM A193 Grade B8M specification for high-temperature service. The partially threaded configuration provides 1-1/2" thread length and 4" grip length for optimal stress distribution. Meets industry standards for chemical composition and mechanical properties, ensuring compatibility with regulated industrial applications requiring documented material traceability and performance verification.