S-95198A361 5/16"-24 x 1/2" 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 ensures reliable leak-proof sealing in demanding applications, preventing fluid or gas ingress under pressure.
• Exceptional Corrosion Resistance: Made from 18-8 Stainless Steel, offering excellent durability and resistance to rust and oxidation in harsh environments.
• High Tensile Strength & Reliability: With a tensile strength of 100,000 psi, this screw provides robust, long-lasting fastening for high-stress assemblies.
• Precision Fine Thread Fit: Class 3A UNF fine threads deliver tighter tolerances and superior vibration resistance compared to coarse threads, ensuring secure connections.
• Wide Temperature Compatibility: O-ring functions effectively across a broad temperature range from -40°F to 225°F, suitable for varied operational conditions.
• High-Pressure Endurance: Capable of withstanding up to 1500 psi, making it ideal for pressurized systems requiring dependable sealing.
• Standard-Compliant Design: Manufactured to meet ASME B18.3, DIN 912, and ISO 4762 standards, ensuring interchangeability and consistent quality in global applications.

Professional Applications & Engineering Value

This socket head cap screw is engineered to address critical challenges in industrial fastening and sealing applications. The combination of 18-8 stainless steel and a Buna-N rubber O-ring provides a durable, corrosion-resistant solution that maintains integrity under high pressure and temperature fluctuations. Its fine UNF thread with a Class 3A fit ensures minimal backlash and enhanced vibration resistance, crucial for precision machinery, hydraulic systems, and automotive components. By integrating sealing directly into the fastener, it eliminates the need for additional gaskets, simplifying assembly and reducing potential failure points in pneumatic systems, fluid power equipment, and other high-pressure environments.

Specification Summary & Compliance

This screw features a 5/16"-24 UNF fine thread with a Class 3A thread fit for high precision, a 1/2" length, and a hex drive for secure installation. It complies with ASME B18.3, DIN 912, and ISO 4762 standards, ensuring dimensional accuracy and performance consistency. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for hazardous substances.