S-90042A183 M5 x 8 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 creates a reliable seal against dust, moisture, and fluids, withstanding pressures up to 1500 psi for leak-free assemblies.
• Exceptional Corrosion Resistance – Made from 18-8 stainless steel, offering excellent durability in harsh or humid environments without rust or degradation.
• High Tensile Strength & Hardness – Delivers 100,000 psi tensile strength and Rockwell B85 hardness for secure, vibration-resistant fastening under heavy loads.
• Wide Temperature Tolerance – O-ring functions reliably across an extreme range of -80°F to 400°F, ideal for applications subject to thermal cycling.
• Precision Thread Fit – Class 6g thread ensures smooth installation and consistent clamping force, reducing the risk of cross-threading or loosening.
• Standard Socket Drive Compatibility – 4 mm hex drive allows for easy installation with common tools, providing a flush finish in confined spaces.
• Global Standards Compliance – Manufactured to ASME B18.3, DIN 912, and ISO 4762 specifications, ensuring interchangeability and quality assurance.

Professional Applications & Engineering Value

This M5 socket head cap screw is engineered for demanding industrial environments where both mechanical integrity and environmental sealing are critical. The 18-8 stainless steel construction resists corrosion from chemicals, water, and atmospheric exposure, making it suitable for machinery, automotive, and outdoor equipment. The integrated silicone rubber O-ring provides a dependable seal in hydraulic or pneumatic systems, preventing fluid leaks and contamination. With a coarse thread (0.8 mm pitch) and Class 6g thread fit, it offers quick assembly and high vibration resistance, reducing maintenance needs in dynamic applications. Ideal for use in enclosures, pumps, and high-pressure fixtures, this fastener ensures long-term reliability and compliance with international engineering standards.

Specification Summary & Compliance

The screw features an M5 x 0.8 mm metric coarse thread with a Class 6g tolerance for precise fit. It is fully threaded and includes a standard socket head with a 4 mm hex drive. Manufacturing adheres to ASME B18.3, DIN 912, and ISO 4762 standards. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for global supply chains.