S-90608A313 8-32 x 3/4" ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance – Integrated Buna-N O-Ring creates a reliable seal capable of withstanding pressures up to 1500 psi, preventing leaks in critical applications.
• Exceptional Corrosion Resistance – Made from 316 Stainless Steel, this screw offers excellent durability in harsh, corrosive environments.
• High Tensile Strength & Hardness – With 100,000 psi tensile strength and Rockwell B85 hardness, it ensures long-term mechanical reliability under heavy loads.
• Precision Thread Fit – Class 3A thread fit provides tighter tolerances for secure, vibration-resistant fastening in demanding assemblies.
• Wide Temperature Compatibility – O-Ring functions effectively across a broad range from -40° to 225°F, suitable for varied operational conditions.
• Easy Installation with Hex Drive – 9/64" hex drive allows for straightforward installation and removal using standard tools, reducing assembly time.
• Full Thread Engagement – Fully threaded design ensures consistent clamping force and secure fastening along the entire length.

Professional Applications & Engineering Value

This 8-32 UNC thread socket head cap screw is engineered to address critical sealing and corrosion challenges in industrial settings. The combination of 316 stainless steel and a Buna-N O-Ring provides a robust solution for applications exposed to moisture, chemicals, and high pressure—such as fluid power systems, pumps, and machinery enclosures. The coarse thread spacing and Class 3A fit enhance grip and resistance to loosening under vibration, making it ideal for dynamic environments. By integrating the O-Ring directly into the screw design, it eliminates the need for additional sealing components, simplifying assembly while ensuring maximum sealing performance up to 1500 psi. This fastener is particularly valuable in sectors like automotive, aerospace, and chemical processing, where reliability and compliance with international standards are paramount.

Specification Summary & Compliance

This socket head cap screw adheres to precise dimensional standards, including Class 3A thread fit for superior accuracy and UNC coarse thread specifications. It meets ASME B18.3, DIN 912, and ISO 4762 manufacturing standards, ensuring interoperability and quality. The product is also compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental suitability for global industrial use.