S-95198A374 3/8"-16 x 7/8" ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance: Integrated Buna-N rubber O-ring provides reliable sealing up to 1500 psi, preventing leaks in pressurized applications.
• Exceptional Corrosion Resistance: Made from 18-8 stainless steel, offering excellent durability in harsh environments and reducing maintenance needs.
• High Tensile Strength & Durability: With 100,000 psi tensile strength and Rockwell B85 hardness, it ensures long-term reliability under heavy loads.
• Wide Temperature Tolerance: O-ring functions effectively from -40° to 225°F, maintaining seal integrity in extreme thermal conditions.
• Precision Thread Fit: Class 3A UNC coarse threads enable easy assembly and secure fastening with minimal risk of stripping.
• Standard Hex Drive Compatibility: 5/16" hex drive allows for quick installation with common tools, improving workflow efficiency.
• Full Thread Engagement: Fully threaded design ensures consistent clamping force along the entire 7/8" length for uniform stress distribution.

Professional Applications & Engineering Value

This socket head cap screw is engineered to address critical sealing and strength challenges in industrial assemblies. The 18-8 stainless steel construction provides inherent corrosion resistance, ideal for applications in chemical processing, marine equipment, and outdoor machinery where moisture exposure is common. The Buna-N rubber O-ring integrated into the design creates a robust seal against fluids and gases, capable of withstanding pressures up to 1500 psi. This makes it particularly valuable in hydraulic systems, pneumatic controls, and engine components where leak prevention is paramount. The UNC coarse thread with Class 3A fit ensures rapid installation and reliable performance in high-vibration environments, reducing assembly time and minimizing the risk of thread failure. Its fully threaded body and standardized hex drive compatibility further enhance its versatility across various manufacturing and maintenance scenarios.

Specification Summary & Compliance

This fastener features a 3/8"-16 UNC thread with Class 3A thread fit for precise dimensional accuracy. It complies with ASME B18.3, DIN 912, and ISO 4762 manufacturing standards, ensuring consistent quality and interchangeability. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.