S-95198A303 8-32 x 7/8" ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Reliable Sealing Performance: Integrated Buna-N rubber O-ring ensures leak-proof connections, capable of withstanding pressures up to 1500 psi and temperatures from -40° to 225°F, ideal for demanding fluid or gas applications.
• Superior Corrosion Resistance: Made from 18-8 stainless steel, offering excellent durability in harsh environments, reducing maintenance and replacement costs.
• High Tensile Strength: With a tensile strength of 100,000 psi and Rockwell B85 hardness, this screw provides robust, long-lasting fastening for high-stress assemblies.
• Precision Thread Fit: Class 3A thread fit ensures tight, secure engagement with minimal risk of loosening, enhancing assembly reliability in vibration-prone settings.
• Easy Installation with Hex Drive: 9/64" hex drive allows for straightforward torque application using standard tools, speeding up installation and reducing labor time.
• Full Thread Coverage: Fully threaded design maximizes grip and load distribution along the entire length, improving stability in various mounting scenarios.
• Compliance with Global Standards: Meets ASME B18.3, DIN 912, and ISO 4762 specifications, ensuring interoperability and quality assurance across international projects.

Professional Applications & Engineering Value

This 8-32 UNC thread socket head cap screw is engineered to address critical sealing and durability challenges in industrial environments. The 18-8 stainless steel construction provides exceptional resistance to corrosion and oxidation, making it suitable for applications in chemical processing, marine equipment, and outdoor machinery where moisture and chemicals are present. The Buna-N rubber O-ring sealing feature is vital for preventing leaks in hydraulic systems, pneumatic controls, and fluid transfer setups, operating reliably across a broad temperature range from -40° to 225°F. With a coarse thread and Class 3A fit, it ensures quick, secure fastening even in high-vibration settings like automotive assemblies or heavy machinery, reducing downtime and enhancing safety. Its fully threaded design and hex drive simplify installation, supporting efficient maintenance and repair workflows in B2B sectors such as manufacturing, aerospace, and energy infrastructure.

Specification Summary & Compliance

This screw features precise UNC coarse threads with a Class 3A thread fit for accurate engagement, adhering to ASME B18.3, DIN 912, and ISO 4762 standards for dimensional consistency. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material traceability in global supply chains.