S-95198A467 8-32 x 1/4" ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior sealing performance with Viton® fluoroelastomer O-rings that withstand pressures up to 1500 psi and temperatures from -20° to 400° F, preventing leaks in demanding environments.
• Exceptional corrosion resistance thanks to 18-8 stainless steel construction, ensuring long-term reliability in harsh or humid conditions.
• High tensile strength of 100,000 psi provides reliable fastening under heavy loads, reducing the risk of mechanical failure.
• Precise Class 3A thread fit with UNC coarse threads for easy installation and secure, vibration-resistant connections in industrial assemblies.
• Durable Rockwell B85 hardness offers excellent wear resistance, maintaining screw integrity through repeated use and high-stress applications.
• Hex drive compatibility (9/64") allows for efficient torque application with standard tools, speeding up assembly and maintenance processes.
• Full threading ensures consistent engagement along the entire 1/4" length, providing uniform clamping force and stability.

Professional Applications & Engineering Value

This socket head cap screw is engineered to address critical sealing and durability challenges in industrial settings. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, making it ideal for applications in chemical processing, marine equipment, and food machinery where moisture and corrosive agents are present. The integration of a Viton® fluoroelastomer O-ring ensures reliable sealing against fluids and gases up to 1500 psi, preventing leaks in hydraulic systems, pumps, and pressurized containers. With a UNC thread form and Class 3A fit, it offers precise alignment and strong holding power, reducing the risk of loosening under vibration. This combination of high tensile strength and temperature resilience (-20° to 400° F) makes it a go-to fastener for automotive, aerospace, and heavy machinery assemblies where performance under extreme conditions is non-negotiable.

Specification Summary & Compliance

This screw features a Class 3A thread fit with UNC coarse threads (8-32 size) and a length of 1/4", ensuring dimensional accuracy per ASME B18.3, DIN 912, and ISO 4762 standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and regulatory adherence for global industrial use.