S-92790A664 7/8"-9 x 3 1/2" 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, ideal for harsh chemical and marine environments
• Exceptional mechanical strength delivering 75,000 psi tensile strength for heavy-duty load-bearing applications
• Reliable thread engagement with Class 2A thread fit ensuring precise, vibration-resistant connections
• Optimized for high-temperature service through ASTM A193 Grade B8M certification
• Easy installation and removal with standard external hex drive and coarse UNC threading
• Enhanced durability with Rockwell B96 hardness providing excellent wear resistance
• Versatile partial threading allowing for both clamping and precise positioning in assemblies

Professional Applications & Engineering Value

This 7/8"-9 UNC hex head screw delivers critical performance in demanding industrial settings where corrosion and mechanical stress are primary concerns. The 316 Stainless Steel composition provides exceptional resistance to chlorides and acidic environments, making it ideal for chemical processing, marine equipment, and offshore installations. The coarse thread design ensures rapid assembly and superior vibration resistance, while the partial threading allows for precise grip length control in structural applications. With ASTM A193 Grade B8M compliance, this fastener maintains its mechanical properties at elevated temperatures, solving engineering challenges in power generation, petroleum refining, and high-temperature piping systems where both corrosion resistance and thermal stability are mandatory.

Specification Summary & Compliance

This hex head screw features Class 2A thread fit tolerance per UNC standards, ensuring consistent threading precision. Manufacturing complies with ASTM A193 specification for high-temperature service, with material certification to Grade B8M. The fastener meets industry standards for dimensional accuracy with specified thread diameter (0.875"), length (3 1/2"), and grip length (1 1/2") in inch system measurements. The 316 Stainless Steel construction conforms to RoHS and REACH environmental compliance requirements for industrial applications.