S-90042A321 M2 x 8 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 effective sealing against dust, moisture, and fluids, protecting sensitive components in demanding environments.
• High Corrosion Resistance: Made from 18-8 stainless steel, offering excellent resistance to rust and corrosion, ideal for harsh or outdoor industrial applications.
• Superior Mechanical Strength: With a tensile strength of 100,000 psi, these screws provide dependable, long-lasting fastening under high-stress conditions.
• Wide Temperature Tolerance: O-ring functions effectively from -40° to 225°F, ensuring seal integrity across a broad operational temperature range.
• Precision Thread Fit: Class 6g thread fit guarantees consistent, secure engagement with mating parts, reducing the risk of loosening or assembly failures.
• Easy Installation with Standard Tools: Hex socket (1.5 mm drive) allows for straightforward installation using common hex keys, speeding up assembly and maintenance.
• Pressure Resilience: Capable of withstanding maximum pressures up to 1500 psi, making them suitable for high-pressure fluid or pneumatic systems.

Professional Applications & Engineering Value

This M2 socket head cap screw is engineered to address critical sealing and fastening challenges in precision assemblies. The combination of 18-8 stainless steel and a Buna-N rubber O-ring provides a durable, corrosion-resistant solution that maintains seal integrity under varying pressures and temperatures. Commonly used in industrial machinery, automotive systems, and electronic enclosures, these screws prevent leaks and contamination in applications such as fluid connectors, compressor units, and protective casings. The fully threaded design and coarse thread pitch ensure quick, secure fastening, while the hex drive facilitates easy access in confined spaces, reducing installation time and improving overall assembly reliability.

Specification Summary & Compliance

This screw features an M2 x 0.4 mm metric coarse thread with a Class 6g thread fit for precise dimensional accuracy. It is manufactured in accordance with ASME B18.3, DIN 912, and ISO 4762 standards, ensuring consistent quality and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety requirements for hazardous substances.