S-92790A669 7/8"-9 x 4 3/4" ASTM A193 Super-Corrosion-Resistant 316 Stainless Steel Heavy Hex Head Screws for High-Pressure Applications

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction for extended service life in harsh environments
• Exceptional mechanical strength with 75,000 psi tensile strength and Rockwell B96 hardness for heavy-duty applications
• Reliable thread engagement with Class 2A thread fit ensuring precise assembly and vibration resistance
• Optimized drive performance with external hex design providing maximum torque transfer and installation efficiency
• Versatile partial threading allowing both secure clamping and unthreaded shank strength where needed
• Industry-standard compliance meeting ASTM A193 Grade B8M specifications for quality assurance
• Coarse UNC thread profile enabling rapid installation and superior performance in various materials

Professional Applications & Engineering Value

This 7/8"-9 UNC hex head screw delivers critical performance advantages in demanding industrial settings where corrosion resistance and structural integrity are paramount. The 316 Stainless Steel composition provides exceptional protection against chemical exposure and atmospheric corrosion, making it ideal for marine, chemical processing, and food industry applications. The partially threaded design combines the benefits of a fully threaded engagement zone with an unthreaded shank that maintains superior shear strength. With its external hex drive and coarse thread spacing, this fastener enables rapid installation while maintaining reliable clamping force in high-vibration environments. The combination of 75,000 psi tensile strength and controlled hardness ensures consistent performance under extreme mechanical stress, reducing maintenance frequency and replacement costs in critical assemblies.

Specification Summary & Compliance

This heavy-duty fastener features precise Class 2A thread fit according to UNC standards, ensuring proper clearance and reliable engagement. The manufacturing process strictly adheres to ASTM A193 Grade B8M specifications, guaranteeing material composition and mechanical properties. The 7/8"-9 UNC coarse thread configuration provides optimal performance in various base materials, while the partial threading (2" thread length) and overall 4 3/4" length offer versatile application possibilities. Compliance with industry standards ensures consistent quality and performance across all production batches, meeting the rigorous demands of industrial fastener applications.