S-95198A556 3/8"-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 Viton® fluoroelastomer O-ring ensures a reliable seal, capable of withstanding pressures up to 1500 psi and extreme temperatures from -20° to 400° F, preventing leaks in critical applications.
• Exceptional Corrosion Resistance: Manufactured from 18-8 Stainless Steel, this screw offers excellent durability and resistance to rust and corrosion, ideal for harsh industrial environments.
• High Tensile Strength & Durability: With a 100,000 psi tensile strength and Rockwell B85 hardness, it provides robust, long-lasting performance under high mechanical stress.
• Precision Thread Fit for Secure Fastening: The Class 3A fine thread (UNF 3/8"-24) ensures a tight, precise fit, reducing the risk of loosening and enhancing joint integrity.
• Easy Installation with Hex Drive: The 5/16" hex socket drive allows for straightforward installation and removal using standard tools, improving assembly efficiency.
• Broad Industry Compliance: Meets ASME B18.3, DIN 912, and ISO 4762 standards, ensuring compatibility and reliability in global engineering applications.
• Environmental & Safety Compliance: Compliant with RoHS 3 and REACH regulations, making it a safe and sustainable choice for various industries.

Professional Applications & Engineering Value

This socket head cap screw is engineered to address critical challenges in high-pressure and temperature-sensitive environments. The combination of 18-8 Stainless Steel and a Viton® O-ring provides a robust sealing solution that prevents fluid or gas leakage in applications such as hydraulic systems, pneumatic equipment, and chemical processing machinery. The Class 3A fine UNF thread offers superior thread engagement and vibration resistance, ensuring stable connections in dynamic settings. Its fully threaded design allows for uniform load distribution, while the hex socket drive facilitates easy access in confined spaces. Ideal for industrial sealing needs, this screw enhances operational reliability and reduces maintenance downtime in demanding sectors like automotive, aerospace, and oil & gas.

Specification Summary & Compliance

This screw features a 3/8"-24 UNF fine thread with a Class 3A fit for high precision and strength. It adheres to manufacturing standards including ASME B18.3, DIN 912, and ISO 4762, ensuring dimensional accuracy and performance consistency. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms its environmental safety and regulatory alignment for global use.