S-95198A213 3/8"-16 x 1 1/2" ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance: Integrated silicone rubber O-ring ensures reliable pressure sealing up to 1500 psi, preventing leaks in demanding fluid and gas systems.
• Exceptional Corrosion Resistance: Made from 18-8 stainless steel, offering excellent durability in harsh environments and prolonged service life.
• High Tensile Strength: Withstands up to 100,000 psi tensile load, providing secure fastening for high-stress industrial applications.
• Precision Thread Fit: Class 3A UNC coarse threads deliver tight, accurate engagement, reducing the risk of cross-threading and ensuring consistent clamping force.
• Wide Temperature Tolerance: O-ring functions effectively from -80°F to 400°F, maintaining seal integrity across extreme operating conditions.
• Easy Installation with Hex Drive: 5/16" hex drive allows for high torque application using standard tools, facilitating quick and secure assembly.
• Compliance with Global Standards: Meets ASME B18.3, DIN 912, and ISO 4762 specifications, ensuring interchangeability and quality assurance in international projects.

Professional Applications & Engineering Value

This socket head cap screw is engineered to address critical challenges in industrial fastening where pressure integrity and corrosion resistance are paramount. The 18-8 stainless steel construction provides robust strength and resistance to oxidation, making it ideal for machinery, automotive, and chemical processing equipment exposed to moisture and chemicals. The UNC coarse thread design ensures rapid assembly and disassembly, while the Class 3A thread fit minimizes play and vibration-induced loosening. The inclusion of a silicone rubber O-ring enables effective sealing in hydraulic systems, pumps, and compressors, preventing fluid leakage under pressures up to 1500 psi. Its fully threaded body allows for uniform load distribution, enhancing joint reliability in high-pressure applications and reducing maintenance downtime.

Specification Summary & Compliance

This screw features a 3/8"-16 UNC coarse thread with Class 3A fit for precise dimensional accuracy, adhering to ASME B18.3, DIN 912, and ISO 4762 manufacturing standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material sustainability. The Rockwell B85 hardness and 100,000 psi tensile strength confirm its reliability for rigorous engineering use.