S-90042A479 M6 x 20 mm 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, rated for pressures up to 1500 psi and temperatures from -20° to 400° F, ensuring reliable leak prevention in demanding environments.
• Exceptional corrosion resistance due to 18-8 stainless steel construction, providing long-term durability and reduced maintenance in harsh or humid conditions.
• High tensile strength of 100,000 psi and Rockwell B85 hardness for secure, vibration-resistant fastening that withstands heavy mechanical loads.
• Precision metric threading (M6x1mm, Class 6g) ensures consistent, easy installation and optimal fit in coarse-thread applications, minimizing cross-threading risks.
• Standard hex socket drive (5mm) allows for high-torque application with common tools, facilitating quick assembly and disassembly in confined spaces.
• Full threading along the 20mm length offers maximum grip and adjustability, ideal for applications requiring uniform clamping force.
• Compliance with major international standards (ASME B18.3, DIN 912, ISO 4762) and environmental regulations (RoHS 3, REACH) for guaranteed quality and safe use in global markets.

Professional Applications & Engineering Value

This M6 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 suitable for applications in chemical processing, marine equipment, and food machinery where moisture and contaminants are prevalent. The integrated Viton® fluoroelastomer O-ring creates a robust seal that prevents fluid or gas leakage under high-pressure conditions (up to 1500 psi), which is essential in hydraulic systems, pneumatic components, and automotive assemblies. With a fully threaded metric design and Class 6g thread fit, it ensures precise alignment and secure fastening, reducing the risk of joint failure in vibrating environments. The hex socket drive enables efficient installation with standard tools, streamlining maintenance and reducing downtime in production lines. Ideal for OEM and MRO uses, this screw delivers reliable performance in sealing-critical applications while meeting stringent industry standards.

Specification Summary & Compliance

This screw features M6x1mm coarse threads with a Class 6g tolerance for precise fit and easy assembly. It complies with ASME B18.3, DIN 912, and ISO 4762 manufacturing specifications, ensuring dimensional accuracy and interoperability. The product is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, confirming adherence to environmental and safety regulations for hazardous substances. With a maximum hole diameter of 6.655 mm, it is designed for standard metric applications requiring high-pressure sealing and corrosion resistance.