S-90042A161 M3 x 4 mm 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 leak-proof connections, ideal for fluid and gas systems.
• Exceptional Corrosion Resistance: Made from 18-8 stainless steel, offering long-lasting durability in harsh environments.
• High Tensile Strength: Withstands up to 100,000 psi, providing secure fastening under high-stress conditions.
• Precise Thread Fit: Class 6g thread ensures smooth installation and consistent engagement in metric assemblies.
• Wide Temperature Tolerance: O-ring functions from -80° to 400° F, suitable for extreme thermal applications.
• High-Pressure Capability: Handles maximum pressures up to 1500 psi, perfect for pressurized equipment.
• Standard-Compliant Design: Conforms to DIN 912 and ISO 4762, ensuring interchangeability and reliability in global projects.

Professional Applications & Engineering Value

This M3 socket head cap screw is engineered to address critical sealing and durability challenges in industrial settings. The 18-8 stainless steel construction provides excellent resistance to corrosion and oxidation, making it ideal for use in marine, chemical processing, and outdoor equipment. The integrated silicone rubber O-ring creates a robust seal that prevents leaks in hydraulic systems, pneumatic controls, and fluid transfer applications, even under fluctuating temperatures from -80° to 400° F. With a coarse thread (0.5mm pitch) and Class 6g thread fit, it ensures quick, secure installation in metric assemblies, reducing assembly time and minimizing the risk of cross-threading. The 2.5mm hex drive allows for high-torque application without slippage, enhancing operational safety and efficiency in machinery, automotive, and electronics manufacturing.

Specification Summary & Compliance

This fastener features precise M3 x 0.5mm coarse thread with a Class 6g tolerance for accurate fit, and is fully threaded for consistent holding power. It complies with ASME B18.3, DIN 912, and ISO 4762 standards, ensuring dimensional accuracy and performance reliability. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for global use.