S-95198A512 1/4"-20 x 2" ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance – Viton® Fluoroelastomer O-Ring provides reliable sealing up to 1500 psi and withstands temperatures from -20° to 400° F, ideal for demanding fluid and gas containment applications.
• High Tensile Strength & Durability – 100,000 psi tensile strength and Rockwell B85 hardness ensure long-term reliability under high-stress conditions, reducing the risk of fastener failure.
• Precision Thread Fit – Class 3A UNC coarse threads offer excellent engagement and vibration resistance, minimizing loosening in dynamic assemblies.
• Corrosion-Resistant Material – 18-8 Stainless Steel construction provides excellent resistance to rust and corrosion, extending service life in harsh industrial environments.
• Easy Installation & Access – Standard hex socket (3/16" drive) and partially threaded design allow for straightforward tightening in confined spaces with standard tools.
• Broad Industry Compliance – Meets ASME B18.3, DIN 912, and ISO 4762 standards, ensuring interchangeability and quality assurance across global engineering projects.
• Environmental & Regulatory Safety – RoHS 3 and REACH compliant, supporting sustainable and safe manufacturing practices without hazardous substances.

Professional Applications & Engineering Value

This Socket Head Cap Screw with Viton® O-Ring is engineered to address critical sealing and mechanical fastening challenges in high-pressure systems. The 18-8 Stainless Steel body offers robust corrosion resistance, while the Class 3A UNC coarse thread ensures secure fastening even under vibration. Ideal for hydraulic systems, pneumatic equipment, and industrial machinery, this screw prevents leaks and maintains integrity at pressures up to 1500 psi. Its partially threaded design and hex socket drive facilitate quick installation in tight spaces, reducing assembly time and improving maintenance efficiency. By combining high tensile strength with reliable sealing, this fastener minimizes downtime and enhances the longevity of critical assemblies.

Specification Summary & Compliance

This screw features precise Class 3A thread fit with UNC coarse threads (1/4"-20), a minimum thread length of 1", and a maximum hole diameter of 0.265". It conforms to ASME B18.3, DIN 912, and ISO 4762 manufacturing specifications, ensuring dimensional accuracy and performance consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing adherence to environmental and safety standards.