S-90042A290 M8 x 30 mm ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Reliable Sealing Performance: Integrated Buna-N rubber O-ring ensures leak-proof operation under pressures up to 1500 psi, ideal for hydraulic and pneumatic systems.
• Corrosion-Resistant Durability: 18-8 stainless steel construction provides excellent resistance to rust and environmental degradation, extending service life in harsh conditions.
• High Tensile Strength: Withstands up to 100,000 psi tensile stress, offering superior load-bearing capacity for demanding mechanical assemblies.
• Precision Thread Fit: Class 6g coarse threads enable quick, secure installation with consistent engagement and reduced risk of cross-threading.
• Wide Temperature Tolerance: O-ring maintains flexibility and seal integrity across a broad range from -40° to 225° F, suitable for varied operational environments.
• Standardized Socket Drive: Hex drive design (6 mm) allows for high-torque application with common tools, ensuring efficient assembly and maintenance.
• Global Compliance: Meets ASME B18.3, DIN 912, and ISO 4762 standards, ensuring interchangeability and quality assurance in international projects.

Professional Applications & Engineering Value

This M8 metric socket head cap screw is engineered to address critical sealing challenges in high-pressure industrial systems. The combination of 18-8 stainless steel and a Buna-N rubber O-ring provides a robust solution for preventing fluid and gas leaks in applications such as hydraulic cylinders, compressor units, and fluid handling equipment. The fully threaded design with coarse pitch (1.25 mm) ensures rapid installation and reliable clamping force, while the socket head allows for compact spaces and high torque application. By integrating the sealing element directly into the fastener, it eliminates the need for additional gaskets, reducing assembly time and potential failure points in demanding engineering environments.

Specification Summary & Compliance

This screw features an M8 x 1.25 mm metric coarse thread with Class 6g tolerance for precise fit, a 30 mm fully threaded length, and is manufactured in accordance with ASME B18.3, DIN 912, and ISO 4762 specifications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for global supply chains.