S-95198A725 1/4"-20 x 1 1/4" ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Reliable Sealing Performance – Silicone rubber O-rings provide excellent leak prevention in high-pressure applications up to 1500 psi, reducing maintenance needs and downtime.
• High Tensile Strength & Durability – 100,000 psi tensile strength and Rockwell B85 hardness ensure long-lasting fastening under demanding mechanical loads.
• Wide Temperature Resistance – O-rings maintain integrity across a broad range from -80°F to 400°F, suitable for extreme environment applications.
• Precision Thread Fit – UNC Class 3A thread specification offers superior engagement and vibration resistance for secure assemblies.
• Corrosion-Resistant Material – 18-8 stainless steel construction provides excellent resistance to rust and corrosion in harsh industrial settings.
• Standardized Socket Drive – 3/16" hex drive allows for easy installation with common tools, improving assembly efficiency.
• Global Compliance Assurance – Meets ASME B18.3, DIN 912, and ISO 4762 standards, with RoHS 3 and REACH compliance for international supply chain suitability.

Professional Applications & Engineering Value

Engineered for demanding industrial sealing applications, these socket head cap screws integrate a silicone rubber O-ring to address common failure points in pressurized systems. The 18-8 stainless steel body ensures corrosion resistance, while the UNC Class 3A coarse thread delivers reliable fastening in high-vibration environments such as hydraulic assemblies, pneumatic equipment, and machinery enclosures. With a 1500 psi pressure rating and broad temperature tolerance, they prevent fluid or gas leaks in critical joints, reducing operational risks and enhancing system longevity. Ideal for OEMs and maintenance teams requiring fully threaded, high-strength fasteners that comply with international engineering standards.

Specification Summary & Compliance

This 1/4"-20 thread screw features Class 3A thread fit per UNC standards, ensuring precise dimensional accuracy. Manufactured to ASME B18.3, DIN 912, and ISO 4762 specifications, it guarantees interchangeability and performance consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible procurement and use in global markets.