S-92655A636 5/8"-11 x 4 3/4" ASTM A193 18-8 Stainless Steel Heavy Hex Head Screws for High-Pressure Applications

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction for long-term reliability in harsh environments
• High tensile strength of 75,000 psi ensures secure fastening under heavy loads and vibration
• Rockwell B100 hardness provides superior wear resistance and durability
• External hex drive design allows for easy installation with standard tools and high torque application
• Class 2A thread fit guarantees precise, reliable engagement while maintaining easy assembly
• Partially threaded design with 1½" thread length optimizes grip and distributes stress effectively
• ASTM A193 Grade B8 certification ensures compliance with industrial standards for critical applications

Professional Applications & Engineering Value

This 5/8"-11 UNC hex head screw delivers exceptional engineering value for demanding industrial applications where corrosion resistance and mechanical strength are paramount. The 18-8 stainless steel construction provides excellent protection against rust and chemical exposure, making it ideal for chemical processing, marine environments, and food processing equipment. The coarse UNC thread design ensures rapid installation and reliable performance in materials where fine threads might strip or fail. With partial threading and substantial grip length, this fastener effectively distributes clamping forces while preventing joint loosening under vibration. The combination of 75,000 psi tensile strength and Rockwell B100 hardness makes these hex head screws suitable for high-pressure piping systems, structural connections, and heavy machinery where failure is not an option.

Specification Summary & Compliance

This 5/8"-11 UNC hex head screw features precise Class 2A thread fit tolerances ensuring consistent performance and easy assembly. Manufactured to ASTM A193 Grade B8 specifications, the fastener meets rigorous industrial standards for chemical and mechanical properties. The coarse thread spacing and right-hand thread direction follow standard UNC specifications for compatibility with existing equipment and components. Compliance with ASTM A193 ensures material traceability and quality control for critical applications where fastener integrity is essential.